Echoing the top shelf margarita at La Cava and any mixed drink at Bluezoo. Frontera Cocina in Disney Springs has some good ones and includes some from the La Cava menu. They also have a to-go window (limited menu). Also in Disney Springs is Dockside Margaritas - they make a good one (with bonus floater if you’d like) and often have live music. In the Animal Kingdom, the African margarita at Dawa Bar is good - albeit pre-mixed (made with a South African orange liqueur) and while it doesn’t have margarita in the title, the Hightower Rocks at Nomad Lounge with Casa Dragones blanco tequila, watermelon, sweet & sour and lime juice is perfection - as is taking a break on their porch. Unfortunately, none of these are on the QS plan.