UPDATE: The info below is for 2016, the 2018 info on MetroPCS Bonus Bring a Friend Mondays can be found here.
Attention Six Flags Fiesta Texas season pass holders! Head to San Antonio or Austin MetroPCS locations for a “Bonus” Bring a Friend FREE voucher! This voucher is valid for a complimentary admission on Monday, 07/18, 07/25, 08/01, 08/08, or 08/15. Just present it along with your season pass at the park for one complimentary general admission ticket. Limit one per season pass, valid only at Six Flags Fiesta Texas. See details here. You can find the nearest MetroPCS location here.