Well, the thread drift here has gotten excessive. Could we please get back to it's original intent please ?
Be flexible. Bring God's Own Aircraft Tiedowns. Make sure your ground cloth isn't hanging out beyond the edge of your tent, and stake it down like your life depends on it.
There WILL be a major storm during the week. It won't last long, but it will lay waste to your campsite if you're not prepared.
Park your plane on squares of 3/4" treated plywood, especially if you're going to stay all week. The ground will likely be soft, and pulling 'er out after a week will be un-fun if you don't.
Vintage is a long ways from the edge of the field, but has the advantage of being at the center of the show. This is a Catch-22 situation, in that you won't be able to easily participate in the evening festivities that often include going to the restaurants off the North edge of the field, adjacent to the North 40.
This is why I continue to park in the North 40, rather than Homebuilt. Much of our week is built around going to the restaurants and bars over there, and I'm getting too old to walk an extra 3 miles for dinner! Besides, our whole enclave of people are out there. (This will be OSH 33 in a row for us!)
Don't expect to see everything in 3 days. Break the grounds into sections, and be systematic. If you just wander aimlessly, you will wear yourself out and miss a lot. We tend to do things the same way each year, with Day One being the "must-do" things (pics at the Brown Arch, buying the patch, etc), Day 2 being Warbirds and a first walk-through of the major exhibit hangars, etc.
Wear comfy shoes that are broken in. Go for a nice, long walk after dinner each night, starting now. You will walk 3 to 5 miles each day you're there, and if you're not used to it, you will suffer.
Bathe in spray-on sunscreen. Buy a dumb floppy hat. If you wear you're usual baseball cap your ears will look like charcoal by the second day. The weather can swing wildly, from the hottest you've ever been to 48 degree rain, so bring a coat.
Get to know your neighbors. Absorb the amazing aviation ambience of being immersed in Oshkosh. Enjoy being with your kind -- for once, you won't be the oddball pilot in the crowd. Oshkosh is a state of mind that stays with me throughout the year, and inspires me to do better at my own airport.
I can't wait to go back!