I wouldn't call anything "disturbing"...but that's a matter of choice.
The one scene meant to "disturb" was awesome...but it had an almost cartoonish quality to it as well.
There is a lot of what I would describe as "not happy"...so if you have sensitive kids you might want to sneak out on your own and judge it first.
I took my soon to be 9 and just turned 7 and they liked it/want to go back...no nightmares or visible emotional trauma
They also seem to have framed it as Star Wars...not making it part of anything they associated with daily life.
Your call