The greeting when you walk in is not a transaction. It is a reunion, a hundred thousand people across one weekend treating a food market like the entire neighborhood came back into town at once, until a racetrack parking lot becomes the most crowded living room in the San Gabriel Valley.
The model is the open-air markets of Taiwan, Hong Kong, and Southeast Asia, and after more than a decade here it has stopped being an homage and become its own thing. Taiwanese beef noodle soup. Japanese ube desserts. K-BBQ skewers handed across a counter while somebody performs two rows behind you. The August dates pull the largest crowd of the season, which is either the reason to go or the reason to go early.
Santa Anita Park in Arcadia, free to get in, food priced per item. Take the friend who is always describing a dish from their childhood that nobody else has ever heard of.