Hi,
You won't feel out of place as everyone is in the same position and providing you are prepared to make an effort it is really easy to form friendships during the holiday. There Isn't a great deal today and the excursions are a bit basic.
There are quite a few good bars within walking distance of the hotel and you
can get a bus into the tourist hot spot of Sunny Beach from outside the hotel.
I went in June last year and the weather wasn't great, but I had a great time and I would recommend going.