I view it as a way to grow my Membership Rewards account at a much faster clip than I would normally be able to. (pointsmilesandmore.com)
If your card account is closed, you'll lose the points in your Marriott Rewards account if you don't have any other qualifying earning or redemption activity every 24 months. (creditcards.chase.com)
As for shipping, you can get it for free if you sign up for a free rewards account with them and your total is at least $ 50. (dannydealguru.com)