We have spent most Christmas and New Year's (or "Old Year" as Islanders used to refer to it) on SXM for the past 30 years. It's the peak of High Season but the increase of visitors is managed better than the early years. I too, am glad we did not buy timeshare at Dawn Beach. Yes, the island has more traffic than in the past but just like anywhere it just requires a bit more planning and patience. Except for Christmas and New Year's eve. I doubt you will need reservations.
Welcome back. Enjoy!
PM us if we can assist with additional information.