Here's the Scope on Win Card Promotions in Las Vegas:

Still using Win Cards:
Circus Circus
Four Queens (one set per Lifetime)
Tropicana
Mandalay Bay

The Riviera is no longer offering the WIN CARDS Program.

Due to management reasons, there may never be a Win Card Chip Promotion (with chips) at the Plaza (sounds like a few other Las Vegas Casinos that had the same issues).

We might be seeing Win Cards at New York, New York!