St Maarten/St Martin.
The island is half Dutch and half French.

The reason I recommend this island is because it has everything I think 30 year olds like. Fantastic duty free shopping, excellent food, reasonable accommodations,wonderful beaches, good nightlife (casinos and clubs) It's also a ferry ride away from two other great islands St Barts and Anguilla.

The french side of the island also has some optional clothing beaches if that is something you are interested in.

Enjoy and have a great trip)

More details:
Where to stay depends on your budget. There aren't many 4/5 star resorts besides the new Westin Dawn Beach Resort (it's expensive) Oyster Bay Beach is a popular resort. Check out this link on tripadvisor. It's a list of resorts with current tourist reviews and candid photos.

We like the Dutch side of the island the best but many also like the french side. The optional clothing beaches on the french side is a big draw for some. I'm not against it but I like to keep my bathingsuit on in public (lol)

Check out tripadvisor and if you have any specific questions, I will try to answer them or other posters will.
I hope this helps you.

Well a great place will be Trinidad and Tobago.

First you go to Trinidad for 4 days of hard core partying. Then off to Tobago for 3 days of relaxation in the sun.

So here is your planned vacation via a Trini:

Get into Trinidad on a Thursday afternoon. I don't know where you're coming from but if it's the USA then try to be on the AA flight that gets in at 2:30 pm from Miami or for the latest the Continental from Houston that get's in around 8:00 pm. No later flight, 'cause you have to enjoy Thursday night.

So make sure you stay at the Hilton Hotel in Port-of-Spain, the only upside down hotel in the world, but don't spend money eating there.

Now for dinner on Thursday night you would want to go to Jenny's. There you will get a nice selection of local food and drinks, as well as american dishes. Try to eat around the bar area for atmosphere. After dinner head to club 51 which is right up the block from Jenny's. Thursday night is Kareokee night until 12:00 am. After that is strict jaming to Soca/Reggea/dance hall/ and pop music. Dress nice. Go back to the hotel and relax till 11:00 am.

Friday:
Get up and have a light breakfast. Catch a cab from the hotel and tell them you want to go to Maracus beach. Now go and enjoy some sun and beach. Also, get a bake and shark with a cold, cold Carib Beer. HMMMMM!!!

Head back to the hotel and get at least 3 hours sleep.

People is Friday night. Catch a cab to CROBAR on the Ave. Have some drinks under the Caribbean star lite sky and take ah dance or two. At 11:30 pm head to ZEN night club and dance the night away. Yuh, might see Akon, heehee..

Saturday
Enjoy some shopping in Port-of-Spain and make sure to catch ah doubles-man for a tasty local breaded dish. Please, Please don't have him put pepper in it or else is straight to the hospital.

Saturday night head to St. James and enjoy ah good lime (hang out) at Smokies and Bunties. Eat ah roti, corn soup, and find ah party some way.

Sunday
Head to the airport and off to Tobago for 3 plus days of sun and relaxation.

ENJOY!!!

I live on Antigua and love it… so you could always bring your group here… the economy can use the money

We love Aruba. Great night life, clean beaches, and it's safe to leave your hotel and explore the island. Sweet Vacations took care of us last time we went.

We love Roatan for great scuba and a relaxed environment.

One of the worlds top 10 Caribbean resorts is Atlantis Resort on Paradise Island. It's beautiful and offers so much to do for everyone.

Check out their website -