Fort Worth Weekly Summer Holidays Are Here From Memorial Day to Independence Day, several significant holidays are happening over the summer. Here are some events — near and far — to check out now thru August. By Jennifer Bovee MEMORIAL DAY Tejas Brothers and opening act Carlos Ramos for free at Levitt Pavilion (100 W Abrams St, Arlington, 817-543-4308). From Fri to Sun, head to the National Polka Festival (302 N Dallas St, Ennis, 972-878-2625) and enjoy a weekend of polka dancing with music from 15 bands, including the Grammy Award-winning Brave Combo. Three-day passes are $30. For tickets and band schedules, go to NationalPolkaFestival.com.