Visiting Thailand for the first time. What to expect?

This coming October, I値l be in Bangkok, Thailand for a convention. Since I値l be there for about a week or so, I was thinking of exploring the city. What can I expect to see there and what are some fun activities to do? Since I値l be with my best buddy, he suggested that we head to the clubs and find some single women in Thailand. Since the language is hard and that I知 also shy, I turned him down. But if the clubs there are actually enjoyable, I値l give it a shot. Any suggestions and recommendations? Thanks!