Suggestions for a light cocktail so I can blend?

So when I was in college I drank… a lot. Nothing refined, just whatever booze was on the table, drank not for flavor or anything, just the sake of getting drunk. Flashfoward a few decades, I’m 41 and I’m gonna have to start going to social events as part of work. I drink very, *very* rarely now (maybe 2 beers in the last decade?) And need suggestions for cocktails/mixed drinks that are lighter and easier to drink so that I can be at these functions without looking like an absolute tool because I’m just standing there without a beverage.

I’ve gotten mixed answers from Google, my Facebook friends aren’t helpful because none of them consume alcohol and/or have no real knowledge about it. I’m not a fan of beer and, like I said, I’m in my 40s now, I might as well refine my tastes.

Something I can enjoy that won’t get me sh!tfaced but will help me blend in. All input is appreciated.