On a recent trip through DFW I was traveling SAT-DFW-DCA and my folks were traveling SAT-DFW-MCO so we rode the SAT-DFW leg together. When we got to DFW there were weather delays, we spent a lot of time in the AC together. I have the AC membership, they do not. Then as things looked as though they were going to clear we each went to our gates, I was departing A they were departing D. As I got to my gate, and my folks go to theirs, the ramp was frozen again. I went back to my the A AC, and the AAgent called the D AAgent, and they lets my folks into the D club, while I was in the A Club. (It was her suggestion, not mine) I called my folks on their cell, and told them to go to the club and they would be let in..
I thought that was very nice.. didn't expect it, but it was nice. I departed shortly after, while my folks had an hour our more delay in the D AC.