If you're one of us "bright young things," (and if you're one of the "I make +100K plus per year" set), then I highly recommend you check out "Foxhole" which is behind Barton G where the old "Loading Zone" used to be.
Yes, you, too, can party where once LeatherBears came on the floor.
I'm not kidding.
The atmosphere has changed (not that I ever went to the Loading Zone, regrettably), and the crowd is one I literally haven't seen since we used to flood "The Angelic Brewing Company" in Madison, WI, when we all had a set of freshly minted fake IDs from South Dakota (that ID was never, but NEVER confiscated). But I don't say that in a derogatory manner - stepping into Foxhole is like stepping into a slightly-better Purdy Lounge / whatever that club used to be that was on 36th street, 7 years ago (SoHo Lounge!). It's awesome.
Their drinks are strong, their music is late 80s, and their crowd is needy Jewesses, regretting stupid, bitchy decisions into their manicured nails.
It's a fun time. You'll run into people you know there...and even if you don't, you'll meet people you don't give three shits about there, where you'll all knock a couple back and then end up at... the Deuce. And then La Sandwicherie.
Bottom line? The people drinking are pretty and affluent. The bar staff is attentive enough to justify the auto-gratuity. The space is huge, and the music is what they play at Sports Club LA, during a dance-lab session. If you go there four consecutive weekends, you're almost certain to know everyone hovering at the bar...so it's only natural that you'd thereafter move to the upper decks. (There's an upper deck.)
South Beach, we've found ourselves a higher-class Purdy -- you can now bankrupt yourself and ruin your liver -- but it'll be slightly more conspicuous and slightly more embarrassing when it happens -- but you'll be able to "black-shirt" yourself into the JAPpiest den of drunken debauchery since the Astor went out of style.