I totally disagree with the poster that said the nightlife is boring. Barbados, at least, offers a wonderful nightlife with many great night clubs.
In Holetown there is a really neat club called Baku. Take a nap earlier in the evening and get to the club around 11:30. They are open until dawn and had terrific bands when I was there. (There was one room -- I think called the dungeon (??) -- that I didn't particularly like.) They have a great dance floor as well as an open area by the beach where you can just sit, drink, talk and listen to the band. Note: most people dress up for Baku.
The most popular nightclub on barbados is Harbour Lights. On Monday (and I understand now on Wednesday) they offer a floor show & dinner. I think the price was $35-$40 (US). That price includes the show, dinner, and drinks. It is a great time for a very reasonable price.
Another popular club is The Boatyard in Holetown. During the day you can lay on the beach and eat at the restaurant. In the evening it becomes a nightclub.
I'm not sure if this would be considered a club, but the Roots and Rhythms show at The Plantation is fabulous. It is more pricey than Harbour Lights, but the show is 'bigger'!
One poster did mention that you should be careful. They were correct. As with most 'touristy' places, young women can be targeted.
