I've read that if you go to Guest Relations at any park, you can get some sort of an ID for your children. I'm not sure what that is, though. I would recommend attaching your info (and theirs) to them. One suggestion I read was to go to your local hospital before you leave, and they will be happy to print an ID bracelet for you to put on the kids. (complete with name, address, etc). However, I'd call 1st to avoid going at a busy time. Have fun, we go July 19!!