my son has traveled a bit for a 6 year old. he's been to the outer islands here a bunch and japan 3x. we went to disneyland, legoland, and san diego zoo when he was 5 and as much fun as it was for us, he only speaks fondly of the zoo. i'm glad my wife did all the prep work for the disney trip because she got whatever the app was and booked all our fast passes and mapped out everything really well. we stayed on property and went back for some much needed naps in the afternoon. at legoland, my son only liked the playground and the disco ball in the hotel elevator
i don 't think we'll be doing a cali trip again until my daughter is old enough and she can dress up if she wants to.