Every weekend - Fri Night > Sun Night Week 1 - Sat Night > Sun Night Week 2. Week to 10 days summer holiday each year, week holiday at new year each year. Usually an extra couple of night in school holidays too if I can get time off work.
For me it's not enough and hard not seeing her more, but it's very difficult with travel distance (it's around 40 miles & 50 mins each way so doing that journey 4 times a week already) to make it practical (and financially possible) to do any more.
In terms of social life - Me and my GF occasionally get to do something together (I am step dad to her two) and do our own things as and when, but to be honest I don't pay it a second thought unless its a time I know that there will an opportunity - Even before my current GF when it was just me alone my priority was having my daughter - I think there has been a few occasions where I've asked for a swap of a Saturday to do something special but always make sure I get that time back - proper friends understand that kids come first and you cant get back the growing up years once they are gone - I really couldn't have given two hoots about doing something that didn't involve having her. Besides, you get to do much more cool stuff when it's with kids because it gives you excuses to do fun stuff you would get looked at weirdly if you had no kids with you.