Kind of surprised if you've been able to find Rainbow or Cupecoy Beach Club for your budget for Christmas week, but there are a huge number of new lodgings in that area now. Rainbow had some issues in the past with the management not doing maintenance outside. So if the bad reviews you saw of Rainbow are old, I might discount those. Although you would have to work around timeshare calendars, which might not work for you, you might check into Ocean Club, Sapphire, which are right on Cupecoy, or the Towers, the Summit or Royal Islander, which are close. There are also some 2 or 3 level townhouses at Ocean Club which have a lovely view of the ocean.