About Peter's parents' food stall

Can I say,

Peter's parents' food stall is next to a bus stop. They closed down during weekends. They sell all kins of food.

They also sell drinks at the stall. Peter helps to wipe the table clean. He also serves food to the customers.

his mother and sister help to wash the plates and glasses. They also help clean the dishes. They use gloves and sponges to clean the plates.