I went to South Point on Sunday and signed up for the slot club.
Needed to get some gas cards as the tank was almost empty :).
I noticed that the points do not accumulate on the readout as you
play. One has to remove the card, wait a minute and reinsert it to see
how many points you have earned.
Can't think of any other slot club that does not show your current
activity or your current balance.
Don the Dentist