Yes, they are. Go to your account, and look under "My Rewards Account - Rewards Account Activity". You will see them listed under "Unused Certificates". Make your reservation, and these will auto attach. (instead of auto deducting points) Just be sure to check the hotels category level, if you inadvertently select one above the authorized level, they will not attach. In the event there are issues or problems, call the 800 reservations number, they can assist you.