This might get you started...we've tried and it's always hit and miss with the SA crowd. If it's a party there is usually a better local SA response.
Go to Forum called UNITED STATES OF ADOPTION....click on to San Antonio Proud ....for some odd reason I could not paste the link.
I know it can be done if it's the right location. I've always thought the SA Zoo would be a great place and well as the Kiddie Park off Broadway.
Those 2 places would make great event places. Good luck!