New York City’s Union Square Hospitality Group — which includes Blue Smoke, Box Frites, El Verano Taqueria and the most famous one, Shake Shack (which recently opened on Connecticut Avenue at Longfellow Square) — and the Washington Nationals celebrated the upgraded Miller Lite Scoreboard Walk at Nationals Park with a grand opening party, June 13. Happy partiers enjoyed ShackBurgers, steak tacos and perfect fries along with beer and wine at sunset. The new walk and restaurants will open two-and-a-half hours before the game.