Nice game! Simple & fun. :D 

Feedback:

Need more stall type (Pizza, hot dog, burger, soft drink, clothes or so on) and characters type (Kid, alien and so on), also need add "Restock full" system to restock full the stall and add endless mode, I think. 

My ideas:

I think can add reputation, more reputation more people. Also can add advertisement, to improve reputation or attract x% people to visit night market with short time or forever.

Anyway, great work, dude. ;)