Don't waste your time. I'm registered for the promotion and have been logged on for over an hour trying to access the booking page (it started at 8am EST). I've refreshed the page hundreds of times on different browsers and I get nothing but:

Sorry! Due to the overwhelming number of consumers currently trying to access this promotion, your request is being delayed momentarily. Please be patient, don’t get discouraged, and retry in a few seconds by clicking here, or by going back to http://www.lhw.com/1928.

I checked with friends who are trying and they're all getting the same thing. A big to this "promotion."