Theia just turned 4 last month and we decided to take her to Disneyland for the first time. we weren't very sure how she would react with a big crowd all day, since she gets scared when she sees men.
We were able to go on about a dozen rides. Got inside at 10:30 am and left at 9pm. Theia ended doing great, only screamed a few times here and there. No meltdown til the very end as we were trying to catch the tram back to the parking lot. Leaving right before the fireworks are about to happen. Didn't want to fight our way out with the crowd.