I have no idea what it was used for. I picked up the card at the last A.C. club meeting from a first-time visitor who was selling all his old casino cards and keys. I am assuming that it was issued in conjunction with a bus program for Tropicana patrons. Don't know the period of time the card was issued. I called the 800 number on the card, but was unable to connect. Will try to find out more this weekend while I'm in A.C. for a hockey game at Boardwalk Hall tomorrow.