I think it's a video game/comic book convention. Hence the OG Tomb Raider cosplay with the exceptionally accurate low-poly breasts:It looks like this is a break in some filming, and people are resting and having fun.
A few years ago, my daughter was arranging an apartment in a new house, I participated, and somehow I accidentally got to the floor that was used for filming some shit soap opera, since not all the apartments in the house had been sold yet. There was a break and it looked about the same. However, mostly there young Asian migrant workers chopped noodles from foam boxes.
The two in the background are probably trying to recreate a scene or something between whoever THEY'RE cosplaying as. You see that at conventions, it's best to pay it no mind.