What a wonderful topic for a thread!
When I think "drink" and "Disneyland", I immediately think of the Carthay Circle Manhattan. And yes, Constance, that's the one with the big ice ball.
Napa Rose Lounge also does great cocktails. And wine selections. And their cheese plate is always perfectly curated.
That's one thing Anaheim does much better than Orlando. Any cocktail I've had lately in any of the "Deluxe" hotels at WDW was like something from a 1990's fancy hotel in Anytown USA. They just don't have the artistry, the ingredients, the showmanship that Disneyland Resort's flagship lounges and bars do.