To clarify, CA law states
"25660. (a) Bona fide evidence of majority and identity of the person is any of the following:
(1) A document issued by a federal, state, county, or municipal government, or subdivision or agency thereof, including, but not limited to, a valid motor vehicle operator s license, that contains the name, date of birth, description, and picture of the person.
(2) A valid passport issued by the United States or by a foreign government.
(3) A valid identification card issued to a member of the Armed Forces that includes a date of birth and a picture of the person."
And it further clarifies
"With respect to 'Federal, State, county, or municipal government, or subdivision or agency thereof', such issuing government or agency shall be located in the United States, and Armed Forces means the United States military."
This isn't Disney rules, this is CA laws. If some place else allowed it, it simply means if something had happened, they would be held responsible.