Nightlife is not very well organized. There is some disco clubs and pubs. Of course you can go to the beach and get some dring with you ;))
If you want more than this, go to the near city Nessebar. (30 min walk) or get a bus to Bourgas.
From Bourgas Airport
1) From Bourgas Airport get the public transportation to the city bus station. (near to train station).
2) Get a bus from Bourgas to Ravda.
From Varna Airport
1) From Varna Airport get the public transportation to the city bus station.
2) Get a bus from Varna to Ravda.
From Sofia Airport
1) From Sofia Airport get the TAXI (OK Taxi) to the city bus station.
2) Get a bus to the Bourgas (usualy takes about 6h)
3) From Bourgas get the bus to Ravda
Favorite thing: You can rent a yacht with a crew for a breath-stopping journey. You can also rent a windsurf or just a boat.