Althought not casino related I thought someone might be interested. I have two sets of four different hotel room key cards from the Gaylord Opryland hotel in Nashville, TN from a recent trip for work. I'll sell each set for $10 post paid in a padded envelope or trade for any slot cards I might need. The set includes the Magnolia, Garden Conservatory, Cascades and Delta keys.

Scans of the cards (front and back) are on my trading website:

http://www.slotcardtrader.com/images/roomkeys/opryland.jpg

Additional room key cards, gift cards, Italian Viacards, etc. plus all my slot card doubles are always listed and up to date...
http://www.slotcardtrader.com