Hi sam, I was going to suggest what CD said also :)
Friendship is about compromise to me, so perhaps if you go out once in a blue moon, some of your existing local friends might join you in something different, and maybe enjoy it so much they will do it again with you!
I am 22 and the least party-y person I know! I love a good time, and if I am in the mood, I will go out and enjoy myself. But I hate "town" in general (i.e. going round all the bars and clubs watching people make ar5e5 of themselves and start fights with strangers, and having drinks spilt all over me) so it is rare I bother. My friends all know this, but that said, I have a mix of friends who all like different things.
If you go to these places with someone, you could start conversations with people already there, and find things you have in common.
xx