Ok, this is pet peeve I suppose, although probably more of a complaint.
2 things they both have to do with the App.
I don't like having to make my LL reservations during my window on the app only. If I'm getting up super early I'd prefer using a larger screen, these older eyes in their early 50s don't focus as easy.
I don't understand why we can't login to the computer as an option for these things.
Other than that, not really too many pet peeves with Disney itself. I mean there are things that can get a little annoying but not really a by definition pet peeve like say people who make mouth noises while eating
Edited: Corrected it to LL choices rather than meals.