Has anyone done all four parks in one day?

[joanchris]

My guess is OP's "kids" will be fine with this. DD and I have done this a few times. We start at AK and end at MK, hitting just a few highlights in each. We think is fun.

We were going to do it together in May (teen daughter and me), I was SO tired from the days before, and just wanted to sleep in, so she did it herself. She started at AK (EMH day), hit the headliners, I think she said she even saw FoTLK. Moving on to DHS for TOT and RnRC, Star Tours, then Epcot for TT (Soarin wasn't open) and MS, some food around the world. Then MK where we met up. She had an amazing day (and so did I, sleeping in!).