While we know our children would likely enjoy DL at almost any age, we are trying to determine when might be the best age to go. Given the distance and flight costs, we figure we might be able to take them twice in their childhood. They are currently 1, 2, and 4. I should also mention that if height matters for a lot, our oldest still hasn't reached 40 inches. One thing I was thinking about was whether we should wait until the youngest was 40 inches. We haven't worried about this at WDW, but we have been fortunate to travel there more regularly. I appreciate any advice. Thank you!