We, too are going to SXM November-December timeframe with Delta. Original flights were changed and we were required to do overnights going and returning. Sometimes changes work in our favor. Yesterday we were able to change again so that we start where we originally booked and overnights were eliminated. It really pays to check almost daily. Yes, I know that things could change again and probably will but the folks at Delta appear as frustrated as we are so patience and kindness can help.