We told our kids when we had booked the trip, abour 6 months prior to our trip, and I kinda wish I had waited a little. For the first month everytime we got in the car my son would ask if we were going to Disney, lol. Now we have 18 days to go, we've been marking down the days down on the calender. My 3 older kids (age 4, 5 and 12) have watched just about every show on the Travel channel that is about Disney and have read and reread their guidebook for kids a dozen times. I think by the time we get down there they will be able to tell us everything we may want to know concerning every aspect of the park, lol.