It's your choice on how you want the rebate to make you feel or the action it makes you take. Like the first comment has already explained it for you, the rebate is just a special treatment you get from the casino for being a regular and a loyal customer to them. If you want to use the rebate to chase losses or take smart risks, it depends on you. If you are gambling responsibly or compulsively, with or without rebate, you will still exhibit your pattern of gambling.