Best on-campus happy hour deal: Mad 4 Mex 34th and Sansom streets, behind CVS At 4:30 p.m., Mad 4 Mex cuts loose. For the next two hours, eaters and drinkers alike at the updated Mexican restaurant can treat themselves to half-price wings and draft beers, and a special margarita menu that includes “Big Azz” 22-ounce house margaritas for only $7. Not to mention that every night from 11:00 p.m. and 1:00 a.m. visitors with valid student IDs can get half off most menu items.