Party in a tent

I was inside a large tent.  The sides were made of screen so that the breeze could blow through.  There were many people there and they were all playing games.  The games they were playing were military miniature games, fantasy miniature games and some that I did not recognize.  The group of people slowly left the tent until there was only myself and a man with his two sons.  The sons were like 12 and 8.  The were dressed in masks, feathers and looked like something you might see from an African village.  The danced with the father in the middle and one of his sons on each side.  The masks got very big so they covered all their bodies and all you could see was the masks and arms and legs sticking out.