Costco Rebates/Incentives

So my friend is looking into leasing a new Audi S4 as his lease ends in February of 2021. He doesn’t have a Costco membership, so how long does he have to wait to actually get the rebates if he signs up right now. Also, can the Costco rebate be stacked with like lease cash and market money allowance ??

Pretty sure that all Costco promotions require that you be a member before the promotion starts. So your friend can’t take advantage of it. Check the fine print.