05/22/2013 at 06:00 AM EDT
, Ellen Page
, Patricia Clarkson and the cast of The East
celebrated the film with a dinner at New York's Stanton Social on Monday.
The group of 15 people shared a feast of the restaurant's signature dishes that included red snapper tacos, potato and goat cheese pirogues, smoked duck and baby kale salad, wok charred edamame, beef carpaccio, spicy lamb souvalki, vegan spaghetti squash, shrimp and grits, grilled asparagus and herb dusted frites.
Though many of his fellow diners enjoyed gluten-free and vegan options, Skarsgard was "all about the meat and beer," an onlooker tells PEOPLE. "He lightly flirted with his waitress. Pointing at his Brooklyn Lager, he asked, 'Miss, could you bring me another fine brew just like this one?' "
The source adds that Skarsgard – who always appeared to have a beer in hand – had a great time joking with castmates, eating and dancing as DJ Omari Toomer spun tunes.
– Kristin Boehm