Pick a beer. (I went with Bud Light since everybody drinks it.) Drink it at every party. Just beer. Just takes a couple of months if you actually hit up parties often.
That's actually what I did. I hated drinking beer until I learned the game Tippycup. You guys ever heard of it? Here's how you play: form 2 teams (preferably boys vs. girls) and get a cup of beer ready. First person has to down their beer and then set the cup on the edge of the table upside down and has to flip it so it does a front flip and lands straight up. Then it's the next person's turn.
That's what got me into not having a problem with drinking beer.
What's your sophisticated version of a Kegger then??
A little evening party with flutes of champagne and everyone in ball gowns and tuxedos?? A small chamber orchestra playing away in the background whilst you are surrounded by a bunch of nobs tittering politely at your latest crass rendition of an old joke??