You are completely WRONG! AirVenture is the most organized event you will ever attend. They have their act together with more than 5,000 volunteers who joyfully are there to assist. Plenty of tables, many with umbrellas surround the food vendors, plenty of food vendors all over the venue, although expensive. There are many, many port-potties scattered at convenient places all over the venue and they are maintained throughout the day multiple times. No lines for them. No Smell to them. For over 650,000 people the grounds are kept immaculately clean. Traffic is as well organized as possible with "In" direction in the morning and reversed to "Out" direction in the afternoon. I will say, though, that it is a pain in the butt. Police man the main entry roads and control the traffic lights, and volunteers direct traffic once you gain entry. Busses are provided from the parking areas and have priority with their own special lane. The venue is huge and there are multiple trams that have various routes throughout the grounds. Anybody who is anybody in aviation is there hawking their wares in 4 large hangars. The new airplanes from the big and small companies are displayed outside. There is fly-in airplane camping parking surrounding all the runways; enough for the 10,000 airplanes that fly in. The RV area is like a city in itself. The "cream of the crop" air traffic controllers from around the country control all of the air traffic. There are forums in the forums area every day given by many well know speakers. The FAA also has a building and has seminars all day long.
If you're a lifetime member of EAA, the Oasis on the front line has all kinds of snacks and tables for free in an air conditioned building. If you are a donor you step up even more and have access to the PHP house, that also has even better snacks than the Oasis. EAA hosts almost a dinner there from 4-6 Monday, Tuesday. and Wednesday. If you're a donor or exhibitor, AOPA puts on a great free breakfast and has an outstanding dinner at the Waters house of the Lake on Tuesday evening. Hundreds of people show up to that.
As you get older, 4 wheel scooters are available to rent for the day and have enough charge to get you anywhere on the grounds. Many years ago I almost laughed at the thought of ever needing one but, alas, for the past year and now again for this year I've needed to rent one for my special person.
Flying in with the Mooney Caravan was fun for a number of years. The camaraderie is great. However, I park in Madison and drive up to Oshkosh because I don't want to park on the grass for the week, and I found that by the time everyone had debriefed and I got set to fly back to Madison, the thunderstorms often started building. So I haven't flown in with them for the past few years.
And then there is the pure adventure of traveling more than half way across the country, stopping at places you probably never would have seen, meeting people you never would have met (I've got some great stories of people I've met going to Oshkosh at fuel stops).
This is year 25 and counting. I hope I've conveyed a little bit of the excitement of AirVenture, It's a lifetime experience not to be missed.