I think the only way that you'll get Elite perks is that the name on the reservation - that trumps everything IMO. When I stayed on Mr.'s cert I got his perks (in a way I'm also entitled to it), and if the ressie is made under my name, I only got Gold perks even though I mentioned his MR # and name at VC. Some hotels even said, 'it doesn't matter who you are staying with, you are gold then you are gold'.