I'll start.
They want to move Halloween.
I was on the Dream last night and it sat in port all night instead of cruising.
I was on the Dream and it left in a storm -- I got sick.
They don't have the soda that I drink at the drink station.
I don't like 3-D movies, they make me sick.
I want to ride the Aquaduck, but I don't want to get wet.
Actually, I never, ever complain on vacation. I am always happy and thankful just to be on vacation. I never complain about the rain, the heat, etc.
Seriously, I have been on 3 Disney Cruises and I have no complaints.
A bad day on vacation is better than a good day at work.