Mizner's can get overwhelmed around dinner or game time, and as much as I love the location it needs a freshening-up; it's dowdy. Plus, it's insane that a so-called flagship resort has only one lounge and it opens at 4 or 5 p.m.
For a better and less frantic experience, seek the Citricos bar. It opens at the same time as the restaurant but the bartenders are knowledgeable and apt to sneak in a free sample or two from the kitchen.
Narcoosee's also has a bar but it's small.