Sometimes opportunity knocks at the door. Other times, it politely rings the doorbell. With this DoubleTake Deal, opportunity is standing on your doorstep enjoying all-inclusive gourmet dining, drinks, nightlife, reef snorkeling, diving, windsurfing and more for an unheard-of price: get four (4) days and three (3) nights in gorgeous Cancún, Mexico at select luxury resorts, a $999 value, yours...