Title 8 of the Austin Municipal Code clarifies that a person may not knowingly sell, possess, or consume an alcoholic beverage in a public recreation area, unless provided for in code. (code 8-3-1

Alcoholic beverages are permitted at the following locations on parkland:

(1) in the spectating area of Krieg and Havins Softball Complexes

(2) at a golf course

(3) in a campsite, which is reserved for a specific person or event;

(4) when an approval authorizes the possession, sale, or consumption by a  person or for an event at a public recreation area.

An approval includes a permit, contract or other agreement.