My dd at 2.5 was ready to crash by 8 every night. This was with mid-day breaks. She was also terrified with all her might by the fireworks, and we ran out of Epcot like bats out of h-ll with her screaming. Both my girls generally have no problem staying up very late for holiday and family parties but the excitement of the parks is much more exhausting. My 4 year old couldn’t even make it to pirate night on the cruise!