Good point, the WDC is doing a better job at running the parks than Walt Disney ever did. That guy had it all wrong and we shouldn't listen to his words.
"Believe this Consumer guy, he knows what's up." - Walt Disney talking to Abraham Lincoln
Here's the actual quote:
“No liquor, no beer, nothing. Because that brings in a rowdy element. That brings people that we don’t want and I feel they don’t need it. I feel when I go down to the park I don’t need a drink. I work around that place all day and I don’t have one. After I come out of a heavy day at the studio sometimes I want a drink to relax.”
Point all just being Walt knew alcohol would attract losers and didn't want them in the park, hence why Club 33 was the only place that served alcohol as it was the only part of the park where losers were outright forbidden from entering.