Ooops - sorry I was so late to the party - posted this before I read that you had already been:
"Oh, you are going to have a wonderful time! No need to go off the island of Oahu. Give yourself time to just take in the air at the airport - it’s the most wonderful scent you will ever know! I wish they could bottle it!
I stayed at the Prince a number of years ago when my ex husband was there for a conference. It was absolutely wonderful. The door men/valets/bell boys remembered our name and greeted us every time we came in and out. They had beach toys available for the kids - just a wonderful experience. If the taco truck is still in the marina area - yum!
Airbnb might be good for different areas of the island you want to explore because traffic can get bad - i.e. you might want to do an airbnb for a night or two on the North Shore or on the windward east side. But in Waikiki, stay near the beach. And don’t miss the lighting of the tiki torches at dusk!
Oh, and definitely make time for drinks and a meal at the Mai Tai Bar at the Royal Hawaiian hotel. Best burger I’ve ever had in my life!