I can only speak for myself, naturally, but for me the biggest part of a wedding being fun is when it is set up for the comfort of people there. I don’t mean necessarily the kind of facilities (though that helps), it doesn’t mean the ambience or anything in particular (and obviously varies with the people, too).
Okay, so what kind of things do I think make it work?
1)When a lot of the people at the wedding are people that the couple truly wants to be there, and where there aren’t a ton of people (usually family) that if they had a party, they wouldn’t invite them to it. After all, the wedding and reception are supposed to be about joy and celebration, and when you have too many aunt boombah types who spend all their time nitpicking or telling everyone how better her kid’s wedding was, or uncle vito who gets drunk and then gets obnoxious, etc. It is a lot more fun when it s people they really enjoy being around.
2)Trying to keep it as relaxed as possible (and maybe this is just me). Too many weddings and the receptions are these stiff, formal things (I realize that church services can be like that and tend to be like that,someone married in a high church service is going to be somewhat formal),but the reception doesn’t have to be.
3)have places at the wedding where people can talk, as well as have fun. A loud, noisy reception that is like being at a nightclub might work for some people, but might be nice to have a place where people can talk, too (like go outside on a nice patio).
4)Spend a lot more time and effort, rather than impressing people with the reception, the reception hall, the fountain with the running whatever, on finding ways to make it fun, work with the catering hall or whatever to make it fun and take out the stiffness.
5)Speaking only from my wedding memories, keep it a lot less formal,allow the couple and others to enjoy the time and let it flow as it does. I guess I am not a slave to formality, but so many weddings seem to go off like a military drill “at 20:00 hours the father of the bride will lead her to the table, at 20:05 Aunt Minnie will complain about the hors d’oevres…”…
6)Be a little different, whether it is with the food, or the music, do what you (the bride and groom) will like. You aren’t there to make points with everyone, you are there to celebrate your marriage, and I find if the couple does that, it makes it fun. One of the things that is kind of cool when you do this, people remember it, and later on help bring back the memories. I went to a wedding 20 years ago that purists would sniff at, but the couple wanted to recreate memories of going to a carnival as kids (they knew each other as kids, then later as adults met), so they had things like carnival games and such, the food was catered by a famous Jewish deli, they had a great band there, and everyone had a blast.
I think the biggest one when planning the wedding is make it about yourself, and don’t worry about pleasing everyone else, and that often works out to be the best:)