There is one caveat with this 50%-off deal: You have to travel before Dec. 20th, so most of us won't have the flexibility to take advantage of it.  But if you do, this is a great opportunity to visit places where entire trees seem covered with scarlet macaws, your room is covered with handcrafted furnishings, and you'll come home with money-saving green tactics you'll want to apply to your own home.   www.cayugaonline.com