It has been my experience from 2015 to 2022 that EDTCA does check the parked vehicles for the appropriate yellow EDTCA RV sign with the current York RV badge attached. Usually each evening late and around 5.30 to 6.00am. They will pound on the door until you respond. I don't know what the penalty is. In my case a brochure had slid over and covered a crucial piece of information on the York RV badge.
I would try to park in a location centrally located amongst the halls that interest you the most. You can stop by your vehicle and drop off packages on your way to the next hall. If you bring a cooler and snacks you can eat a snack while walking to the next hall. Doing this you can easily get thru the day without a food "break ". Eat a big breakfast helps as well.
Figure out the most money you could possibly spend , then double it. Bring cash.
Bring a bed sheet to cover the contents in your car. It's supposed to be sunny and I have seen the sun melt boxed items through the clear film window box.
Categorize your wants into gotta haves, maybes, sort ofs etc. Research the eBay "completed sales" on the stuff you really want. Remember at York you get to see and handle the exact item you are buying. Not just some sellers description. Also no tax (usually) and no shipping. Don't be bashful about verifying what the seller has told you about the item.
Check for condition, repaired areas, or replaced parts. I've seen a ton of "mint" "brand new" trains with noticeable wear on the wheels or pick up rollers.
I quickly check the prices on a few items on a table and make a decision on whether to shop further or walk on by (like Dionne).
The tables are numbered by aisle. If you see something you might be interested in and want to look at it closer later, write down the table number and keep moving.
As always, if it's something you want then negotiate and buy it then. Don't set it down on the table until you're sure you don't want it
The trip back home is much nicer and happier after you've bought something you wanted, at maybe not the exact best price, as opposed to missing out on something because you over shopped for it. For you a 5 hour disappointment. For me I get to regret it for 27hours over 1744 miles.
If you miss out on something, don't sweat it. In todays market the supply is growing much faster than the buyers demand.
Time is your enemy. You can talk at a restaurant or bar or orange hall foyer after the halls close. Shop till you drop, especially if it's first trip.
Mike, the data is in the pdf file.