Conversation such as:
“The is no cilantro on the shelves”
Clerk “ we sold a lot today”
“ is there any in the back?”
Clerk” probably not”
“ can you find out”
Clerk “ everyone is makin Mexican food today”
“ please call and check”
“ I am pretty sure it is all gone”
And on and on and on
It’s interesting about the differing attitudes about children. Our family weddings always have children. Like @maya54, our own kids have gone to very nice restaurants since the time they were very young including Michelin starred restaurants as young as 5, where they were warmly welcomed. Ditto with concerts and travel. When our kids were tiny, I remember getting dirty looks boarding airplanes or entering restaurants. I can’t remember how many times those very same people would come over to compliment us later on their behavior. And no electronic gadgets for entertainment. Just setting high expectations, treating them with respect, and engaging with them. To each their own, of course, but I feel like some of you are missing out because I find the company of many children and teens refreshing and honest compared to the self-important behavior of too many adults.
But, I love children - the well behaved ones. I agree that poorly behaved children and their parents (who are at fault) should stay home. My biggest pet peeves with those types at restaurants are families that leave a horrendous mess on the table and floor for the wait staff to pick up and parents who let their children run around which is discourteous to wait staff who have to try to work around them and downright dangerous.
Kinda funny- when someone else does something selfish, it’s annoying, but if you do it (generic “you”, not responding to any one poster) its rationalized/justified as ok.
Yesterday I was driving to the Home Depot lot. There are many cross walks. A dozen people walked straight across the street, but one man, looking at me, crossed diagonally the distance of the store. He held up many cars. What joy did he get from that?
(Fortunately, the customers in the garden store couldn’t be nicer, and the staff loads your trunk.)
People who cut line. I don’t care if you’re old, your kid is crying, your feet hurt - get in the back. And yes, I do say something to the horror of my family. It’s rude.
^ Yup, Yup, yup @Leigh22. Try lining up to board a flight at an international airport. Was like a cattle call with people pushing and shoving and trying to cut ahead. Ditto with tour groups at tourist sights. RUDE.
People who drive in a travel lane until the last minute then swerve quickly into the front of the long line in the slow lane waiting to exit. If you clearly made a mistake or give me the “oops, I’m sorry” signal I’d be happy to let you in. If you just think you are more important than everyone else patiently waiting their turn, not so much.
The flip of that- people who don’t seem to understand the idea of zipper merging and get territorial when there’s no need to be. Getting ahead by one car isn’t going to make you any later to where you need to be.
Not rude behavior, but clueless-people who don’t understand how to drive in a rotary. I know you think you’re being polite when you stop in the middle of the rotary to let someone in, but really all you’re doing is putting everyone, including yourself, in danger.
More than once recently, people (always men) have not waited their turn to get off a plane after landing. And it hasn’t been because the flight arrived late. So rude. A couple of times, I’ve needed to get off a plane quickly due to a tight connection, but I always ASK politely first.
People who pull out of their parking spot TOO QUICKLY. After trading in my 14 year old van for a car with all the bells and whistle, I finally learned why people pull out of their space without looking. But all those alerts and backup cameras don’t catch everything, so you still need to look “the old fashioned way”.
From the 2 sides of every story department: 
From the clerk’s POV:
The is no cilantro on the shelves”
Clerk “ we sold a lot today”
“ is there any in the back?”
Clerk” No, sorry. We’ve sold out”
“ can you find out”
Clerk “I already checked as I was filling in the stock. I’m sorry. There is none left”
“ please call and check”
And on and on and on
I hate when people think the rules don’t apply to them.
For a special birthday trip my husband and I went abroad and stayed at a huge splurge (for us) boutique hotel that specifically said they couldn’t accommodate children under the age of 13. Our first night there a family checked in with three children under the age of 8. They were seated next to us at dinner, and the kids proceeded to throw bread at each other, crawl under the table, and the youngest one was howling at the top of his lungs while mommy and daddy pounded back drinks and ignored the children. This was a jacket and tie required, fine dining restaurant (part of why we chose the hotel). We asked to be reseated into another room as did a number of other guests. There was a young couple where the wife was near tears. We heard her say that it was her first night out with her husband since their baby was born and all she wanted was a quiet, romantic evening out. They had chosen the restaurant specifically because of their no kid policy. There must have been a number of complaints because later we heard the staff making arrangements for them to dine in their room the following night.
I just arrived for an appointment. Several people were sitting in their cars in the parking deck with their back-up lights on, but as there were plenty of other spots and no one was waiting for a space, no problem. Arrive in the office and some kid is playing a video game on a phone with the volume at full blast. Finally after several people give the mom a look, she takes the phone, the kid has a tantrum, and now the kid is climbing all over and jumping on the furniture. The older woman across from me apparently must not be familiar with how to silence her phone assume is texting and it’s making all the associated noises with texts and incoming messages/emails. Sigh. And it’s only Monday. Happy tax day, everyone.
Addendum- now the kid is standing on the furniture AND playing loud games on the cellphone.
LOL!People that insist on backing their car into a parking space, rather just pull in, which is far quicker.
People on planes that don’t quickly get their carry-ons out of the overhead bins when exiting, which blocks the aisle and holds up the passengers behind them.
People that saunter into traffic to get across the street, making traffic stop, rather than use nearby cross walks with the “green man, red hand” light. This is very common in Florida for some reason.
People that speak a foreign language at social gatherings, knowing full well that other attendees don’t understand. I always suspect that they are gossiping about the people around them.
Charities that, if you give them money just once, won’t leave you alone for the rest of your life.
CNN on every TV screen in airports.
People that walk on the left on sidewalks, hallways, etc, when I am coming the opposite direction on the right, expecting me to veer off to the left to walk around them. Maybe this is appropriate in England, but not the US.
People that don’t pick up after their dogs poop.
People that say “I could care less” rather than “I could not care less.”
People that use the word “unconscionable”. I immediately tune out.
People that pin labels on others, if they disagree with their position. No debate necessary!
When the first car in the left turn lane doesn’t see that the protected-left light has turned green and drive, which holds up the cars behind, some of which get stuck when the light turns red, but could have made it through, if the driver of the first car was not so distracted.
Same goes for drivers that leave far too much space between them and the car in front of them. They make it through the intersection before the light turns, and you could have too, if they had just closed the gap in front of them.
People that rsvp affirmatively to dinner parties, etc. but then don’t show up, without a valid reason to be absent.
Couples that argue in public.
There are some folks who back into their parking spots at our Costco… 
Fine if you are buying a few items, not so smart when you have a cartload of potting mix bags, 24-packs of TP, and boxes of groceries!
I loved the comment above about CNN blaring in the airport. It’s noisy enough without listening to their pointless blather. I was recently at PDX. It was very nice. No TVs. Just live piano music in the food court.
The comment about tour buses also resonated. I hate being at a site and have a tour bus pull up. That’s a signal it is time to leave. Last fall we were in Yellowstone. We got up at dawn to see one of the geysers basins in the peace and quiet of the early morning. But…a tour bus full of very loud people from another country pulled up. The peace of the spot was ruined for everyone. I guess in that culture loud talking no matter where one is is acceptable or they just didn’t care. National parks are valued for the quiet spaces and I wish everyone used soft voices so as not to disturb others.
People who cannot be quiet in situations where quiet is required in order to be considerate of others. I say it this way to cover a whole range of situations, but my biggest complaint is the numerous times I’ve spent good money to see a Broadway show and people near me sit there talking during the show. Or eating snacks from crinkly bags. When did New York City theaters decide they wanted to be like movie theaters and start allowing snacks in the auditorium???
“People that insist on backing their car into a parking space, rather just pull in, which is far quicker.”
But don’t they pull out when leaving much more quickly making it all even out? 
^^Read my post about Costco. Unless you drive a Tesla, your car’s trunk is in the back. Whatever speed is gained by pulling out is totally negated by having to waltz around the car to load the stuff
@TatinG - I have another one… folks who hike on nature trails with music blasting from their portable speaker pucks and folks who bring their dogs to places that do not allow pets (like bird and wildlife sanctuaries).