I hope it's okay to post this here, but the Drafthouse tends to do cool stuff on the same weekend as PAX. Last year it was a Venture Bros event, and my PAX group had a blast. Obviously, this will conflict with Friday or Saturday night PAX programming and it requires transportation. Both shows are at 8:30PM, so most of the PAX stuff has died down by then. Tickets are $30 after fees.
Disclaimer: I'm not associated with this event or the Drafthouse, nor have I ever seen this particular show so I can't vouch for its quality.https://drafthouse.com/san-antonio/show/the-mads-are-back-live-with-frank-conniff-and-trace-beaulieu
Tickets are almost gone. Food at the Drafthouse isn't bad (I'm a big fan of their chocolate shakes, myself). Can't speak to the beers at they aren't my thing.