Several of the global Disney parks besides California Adventure sell alcohol. Even in the original park, Disneyland, which has long had a nearly total ban on alcohol has relented and has started selling booze in limited venues (most notably, the Blue Bayou restaurant, which is a fantastic restaurant btw). Money talks, and booze is pretty good money.
In several of the parks, yes! Hell, getting drunk off of “drinks from around the world” at Walt Disney World’s EPCOT is a popular theme for adult guests nowadays. However, I’ll mention that Disneyland is still quite restrictive (though their neighboring park, California Adventure, is not and fully embrace alcohol sales).