They'll have a great time!!!
Without a doubt! I'd say a good majority of the rides are geared towards the whole family, so no need to worry.
yes
There are plenty of rides and attraction for your whole family.
The requirements are based on height not age. I went with my nephew who was 40" and he was able to ride pretty all the kid rides, and some of the adult rides as well
Yes. Download the Disneyland app and 8t will give you the height requirements for each ride.
Depends on their height not age. I think the minimal height is 42". At least for the adult rides I believe. There are children specific rides too
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