Back to food.
This link https://www.eaa.org/en/airventure/pl...nd-concessions has the food vendors listed. you can click on the individual vendors and see their menus. My favorites in the past have been BENVENUTOS (Warbird area) and The Roxy - Aces Bistro (Homebuilders area). Both are Airventure offshoots of local Oshkosh restaurants.
Priority? I believe they try to strike a balance to accomodate and please the most possible without alienating one for the other.
"...semi-secret location..." Really??? You're advocating subterfuge, surreptitiousness..... my, my,my! The days of giving preference and certain benefits to members over non-members ended decades ago. However, if Jack sees your recommendation and agrees, my semi-secret location preference is in the Icon exhibit--no one goes there anymore.
If you have the ability to do so, freezing water bottles and then putting them in that insulated lunch bag will provide hours of cool water sipping. But for all day in the blazing sun with no shade? I have no practical suggestions beyond frequent purchases of small cold drinks.
I wouldn't mind buying 2 pounds of ice from a vendor for $1. They can get 20 pound bags of ice at Walmart for $2.
I don't mind paying the 10 times mark up.
Reading all the posts to page 5, yours advice is convincing, kind sir. I carry simple light high-fiber snacks like granola bars plus a single water bottle and refill it often throughout the day rather than lugging a cooler and leaving a trail of empties in a series of trash cans. Buy a hot meal a day (sandwich or the like) from a vendor. They're gonna serve what their accumulated experience says - sells. So whoever thinks gourmet beverages and haute cuisine etc are the way to go could invest in a booth, get the permits and licensing, and become rich competing with their plebeian fare. Or maybe not.
My only sustenance complaint about this and most other airshow venues is that clean fresh drinking water from a tap is often hard to find. Yeah, cold water is nice and hops improves the flavor, but plain old room temperature water does the job until sundown.
Your mileage may vary.