The Flamingo (Reno) was closed in 2001. It is going to re-open as the "Golden Phoenix". The Gila River card may, or may not, be current, depending on the manufacturers mark on the back. If there is no mark, it is obsolete. If there is a mark of "CPICA 28667", then it is current. Check in the upper right or left corners, on the back.
Dave (also in WI)