I was going to bring up the airline clubs, too. My brother was a member of the United RCC back in the 60s and 70s when it was free and just took a whole bunch of flying to be a member. I remember him mentioning once when his mother-in-law was visiting his family in Iowa he bought a round-trip DSM-ORD ticket to make sure she got on her connecting flight to PHL (she had a bit of an alcohol problem), and spent the time between flights in ORD at the RCC.