The El Cortez web site claims to give you 5% back in free play, up to $50, for cashing your Tax Return. It says to see the slot club for details. DOES ANYONE KNOW THE DETAILS for this offer? Do you know if you can use the refund immediately or do you need to come back another day? Expect you would cash check at casino cage? Is there a charge? "The devil is in the details", so what am I missing here? Thanks.