I volunteer and the EAA provides soft drinks and lunch and a small breakfast for free all day long and if I work so many hours I get a free pass next year.
For Example, Take a wild guess how much it takes to support one port a potty during Airventure.
Take a wild guess.!! We all know there are hundreds of them and they are there a least a month before Airventure and some are there a week or so after.
Take a guess!