How long has it been since you've been in a public library, anyway?
Currently, San Antonio Public Library locations have forms available that say "Complete this form and Receive one (1) complimentary ticket to one or all of the games below with the purchase of at least one additional ticket."
Those games are Dec 5, 12, and 15. It's not all nosebleeds, either; you have your choice of four different price levels.
Taking advantage of this offer is practically your civic duty.