It's already hard not to tell the kids. The other day I said "if we ever go back to Disney where would you guys want to eat?" Lol. I booked our flights too!!!
We just booked last night for March 17 at POR. We we going to wait and tell the kids at Christmas, but we lasted about 2 hours before we couldn't stop talking about it in front of them!
We surprised the kids with our first trip - it was hard to keep it a secret (especially since a lot of other people knew - family, friends, their teachers, etc) but we did manage to pull it off. We told them when we got to the airport.