Good luck at Disney World! How exciting. You must be on the look out for meltdowns, it will help you cope with the whole experience. People can just lose it at a theme park. Whenever we see a parent or kid having a meltdown we point it out, I always say/think "oh there but for the grace of god go I" or if you see it completely unfold, often you can just so relate to the situation. For us, the youngest being 5 and two young teens(13 and 14) we still have a few tantrums, it makes our own family meltdowns easier to laugh at and roll with but sometimes...ahhhh! My family are pretty much old pros at Disneyland, we have passes and go often, so that relieves a lot of the pressure to get as much in as we can, that helps. So relax, have fun and people watch.