Is there an age cut off for kids

No one under the age of 16 and anyone under 18 must have a parent or legal guardian to sign a waiver

Yes. No one allowed under the age of 16. All visitors are required to sign a waiver before beginning the tour. Parents can sign the waiver for kids between 16 and 18.

Need to be 18 have to be able to sign wavers before you enter so legally need to be 18

I wouldn't think so. The museum is not for the light of heart though