There are not a lot of resorts in the Caribbean I'd personally consider exchanging
DVC for. A short list would be headed by resorts like the Westin St. John, Atlantis, the 4 Marriott's, Reef Resort, Grand Caymanian, Hyatt in PR. Maybe add second level resorts like Playa Linda, Costa Linda, Renaissance Aruba, St. James Antigua, Alexandra, Royal Sea Aquarium. I would not put any of the St. Marteen/Martin resorts on the list personally. II also includes Cancun in the Caribbean at times and I would list all the Royal resorts except VCI as top notch options. Aruba and Cancun would likely be better choices for the teens. If you insist on a 2 BR, Cancun would also increase your chances likely 10 times of getting a match.