Thanks again for the information and responses. St. Lucia and Martinique are definitely a possibility. At this point, we'll probably wait a while longer to book to see if tickets change for either option. Last year, right around the beginning of August, tickets to St. Martin dropped about $450 for a day or two. We're hoping for the same luck (or something close to it) for either destination this time around. Another shot at $300 tickets would be too good to turn down.