I understand about the "Food Coupons" , but this actually means that all the food vendors don't need to have "change" on hand, or with the amount of people, they get looted.
This restricts that money to areas that are easily protected.

Remember, most of those working are volunteer, and sometimes the lines go SLOOOOOOWW!
Depending on the times you are there, it IS PACKED!!, I like the evening hours, since it slows down because of those that had already spent too much, or are too tired out to stay.

Unfortunately it is packed because it is so popular.
Hope to catch you there!