Tearing my hair out

So I was all set to go out Friday night for the first time since I had Henry. He is almost 4 months old. I was getting pretty excited! I was even going to have a beer! But alas, everyone and their mother is also going out Friday, so I can't find a babysitter. His wonderful surrogate grandmother has offered, but I feel uncomfortable keeping her out til midnight and I really need for him to be in his bed for consistency. Alas, perhaps it wasnt meant to be... anyone want to come over with a 6 pack Friday to join me, since it looks like Ill be staying in!?!?