Happy Hour Mondays at Carnitas' Snack Shack September 4, 2013 Don’t hibernate Monday nights! Join us Happy Hour! Announcing The Bear Den at The Pig Pen! Your genial host and tapmaster, Luke, will have happy hour price, plenty of local craft beers and Monday Night Football at The Pig Pen, our outdoor patio bar. Now accepting cash and credit cards! 5-10pm Monday nights at Carnitas’ Snack Shack North Park, 2632 University Avenue, San Diego, CA 92104.