You have until Nov. 30, 2010 to sign up to receive deal emails from SkyMiles Cruises to possibly win prizes including a grand prize of 500,000 miles plus a seven-night Caribbean cruise for two in an oceanview stateroom. Other prizes include five, first-place prizes of 100,000 miles each. Visit http://insideflyerus.wpengine.com/link/?3061 to sign up for the sweepstakes. Even if you’re already a subscriber for the cruise emails, you can sign up for the sweepstakes.