El Patrn primary meaning is The Owner when referring to a business, or Landlord if this person is the owner of a large farming estate. A person that commands or dictates instructions or order without no one above him (or her). The female version of the word is Patrona La Patrona .
A casino patron can simply walk into the casino and place a wager without having an established account. While casinos may not have as detailed information about their patrons as banks, there are certainly steps they can take to know their patrons better.