Gearing Up For A Coin Show

A cross body 'sling' bag might work--they come in a range of sizes, and can have one to three or so zippered compartments. Does the show organizer have any restrictions?

Trick is to make yourself as inconspicuous
as possible!
No big bag or case , as little cash as you can
no loud coin related conversation, dress down
as comfortably and neatly as possible .
Also keep an eye out for the Colombian tourist
crooks that seem to frequent every show these days.
Other than that you should be ok!

Take a good quality 10 X magnifying glass.

Fortunately for myself I have had both eyes fixed with fixed focal length cataract lenses, and for driving I don't need glasses any more.

However, I do take a cheap pair of 4X glasses with me to provide easy binocular vision. Leaves both hands free.

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I use cash only, and that fixes me to a strict budget limit at the show.
I have never had a credit card in my life and I never do electronic payments, so I have a very small digital footprint. The result is that I have never been scammed.

My usual strategy at a coin show is to preview every dealers' offerings, and pick out any coin that may take my interest. I go back to those coins and negotiate a price. Such a strategy has serve me well over decades, in that I most often buy at a good price.
Cash often helps me in the negotiation.