That's a great video! I want so badly to keep our May trip a secret from my oldest, but it'll be SOO HARD! We're going with my sister's family and everyone knows but him, so the chances of someone slipping before then are extremely high. It'll probably be ME!
If I can hold out, I plan to send him to school as normal, then pick him up just before lunch and say, "get in the car, we're going to Disney World," as calmly as I possibly can. I'm kind of debating whether I should surprise him or not, because he'll miss the last day of school and I am afraid he'll be upset that he didn't get to say good-bye to his friends (but they'll all be in his class next year, too, so I don't feel too bad).
Thanks for sharing your great surprise!