포장 마치 = food stall
Food stalls in Korea sell a variety of popular local foods like tteokbokki and gimbap. Some are large tents with inside seating and others are just small enough to house the kitchen, with seating just outside. Many people gather at night to drink and sometimes even share their table with strangers who eventually become friends.
포장 마차에서 먹자! = Let’s eat at the food stall!