My Wife and I will be staying at the GN from March 1st to 4th. While I am aware of the Landry card and its use to upgrade rooms, it appears that its impossible to buy a Landry card online or over the phone using a Canadian CC. This leaves me with the $20 Sandwich trick. We are booked into the Carson tower, and having never stayed in the GN I'm not positive what if any upgrades would be possible/realistic. I know to ask for a room higher up, but anything else? As a side note we are there to celebrate my wife's 40th (March 1st). Do you think this could help with an upgrade?