Haven’t written about this because I thought it was common knowledge.
Sidewalk (and stairway) vendors who sell prepared food that can’t be eaten while walking provide tables and chairs for the patrons. Little tables and chairs. Knees in the air short stools. Every one I’ve seen was red plastic.
Photos taken on the stairs next to the Dalat central market. Such scenes have been commonplace everywhere except the tourist district in Hoi An.