I just got back from my vacation to Disney World (6 days) plus 2 days at Lego Land.
I was diapered(Attends) almost 24/7 - using 2 whole bags of 18.
In Disney, I changed at the 1st Aid stations in each park. They are very nice about people who need to change. I did have one unfortunate incident when someone opened the exam room door while I was flat on my back tapping my diaper on - the nurse said it must have been a custodian.
Since I have a frequent urination problem, the diapers did come in handy - especially while standing in line for over an hour for Toy Story Mania.
BTW, I love the new Star Tours.