I always have mixed feelings about these kinds of cards. If you are a single traveler, the 2 for 1's aren't really helpful and the 10% isn't very much. I would love to see an alternate offer suited for a single traveler for each coupon.
Single travellers get nailed. Ever looked at the single supplement on a packaged vacation? Or they will let you room with a stranger.
My experience is that you buy the card and then spend more money trying to use it.