I have gotten a lot of e-mail on this subject over the years, especially from couples. Many like to use one of their cards for their major play days and save the other card for when they are playing a shorter session and don’t want to ruin their daily average, which often determines their mail offers. Or, they want to both play on the same card so they will get to a higher comp tier faster. Or, one plays more than the other so after the frequent-player gets to the top-offer level, he/she plays to get the spouse’s account at the same level so both will get the top mailers.
Although most casinos have a rule in their players club printed material that each person is required to play on his own card, this is often not strictly enforced, except for some promotions, like a marathon where multiple players on one account would give an unfair advantage. However, playing on each other’s card is not usually a problem, especially if each has the same last name and/or shares the same address.
Recently, however, one well-known video poker expert found that this issue could be a problem – a big one! Bob Dancer writes about it in a very interesting Internet column called “When the Rules Are Enforced.” And you will also want to read his follow-up column, “Subtitle: Hoisted on my own Petard!”
Bob’s experience does give one something to think about!