McAllen Chamber of Commerce and Visit McAllen is giving away a one night stay for Mother’s Day on May 10, 2018. Included is also 4 tickets ( 2 adults, 2 kids ) to the Gladys Porter Zoo in Brownsville. Please enter your name, email address & phone number. Must be a resident of Mexico to win. One entry per family. Winner will be announced Monday April 23, 2018. Upon check in at Smart iStay, after proper identification has been presented, you will be given the zoo tickets. Click on the “Restrictions may apply ” below for further rules.