The banquet was held in the hall behind the temple. The banquet hall of the temple was not often used, only during large-scale events where representatives from all over the underwater world gathered at the Storm God Temple would it be put to use. Because it was underwater, there was no presence of dust or dirt. So, even if it wasn't used for a year, there would be no terrible sight of chairs and tables covered in dust. Thus, when the doors were opened, a simple cleaning was enough to welcome new guests.