I played at Westgate today with their new slot card system in place.
You must get a new card. They have a special rewards card desk set up with 3 or 4 employees issuing new cards.
The card reader display is similar to the one at South Point and a big improvement over the old one. You can summon a host or slot tech and order a drink using the keypad.
The old comp dollar balances have been added to the old value of points for freeplay. This new total balance can be used for free play or comps.