This is a floating market food court concept. You will need to pay a small entrance fee to get in, but in return you get a free drink. So not that bad a deal!
There are several food options in there but most would be heading to the floating market to buy their food. The stalls are set up in boats and you will purchased the food directly from them. Please take note never to let your food unattended on the table because there are never-ending houseflies targeting your food.