We are going away to Mexico in a few weeks time with our 3yr old (first holiday with her) and I am very apprehensive about it all. My main concern is the airplane, I don't want her to be upset and be that person who's kid is screaming all flight. She also isn't potty trained so not sure about the changing situation as the toilets are very very small. Does anyone have any advice when travelling with a toddler and about bum changes on the plane.