Can you have a social life/sleep in if you have a dog?

I'm 20 and thinking of getting a golden retriever in a month. This would be MY dog, and I would get very little help from my parents since this is something I want. I understand that dogs are very demanding and time consuming, and I'm responsible and willing to commit, but I just wanted to know if it's still possible to have a social life/sleep in once in awhile. I'm not out clubbing every night nor sleeping in til 3 or anything like that, just wondering if after the puppy phase, things do fall into place and become slightly easier and possible.