When I first quit I found it very hard to be around alcohol. I was very nervous/jittery. It's only been about 2 months for me but I don't mind anymore (for now, I guess we'll see how that evolves).
I do notice though that people don't drink nearly as much as I thought they did (cringing at how I must have stood out!). And the people who do seem under the influence are kind of dull.