I've read I can try a DVC or several before actually buying a package. how exactly do I do this? maybe I can split stay this upcoming vacation to see if we enjoy the BLV, or is it too late? Right now the vacation is Dec 22nd-Jan 3rd at the Polynesian.. we are actually getting there on the 21st and I was thinking of trying a different resort, like the Beach Club but then started thinking I should try a DVC.. then thought maybe I should split the time and do a week at a DVC and a week at the Poly. this even possible though?