Inspector:
Considering a concession trailer has a small floor, I'd consider using aluminum diamond plate tiles as the floor.
You would glue the aluminum tiles down with any flooring adhesive so they could be removed in future as necessary. And, if it were me, I'd staple or nail down 1/4 inch plywood underlayment over your 3/4 inch plywood floor first. That way, in future, if you ever want to remove that floor, just pry up the 1/4 inch underlayment, and you're back to your starting point.
Steel diamond plate is often used on ships because it provides good traction even in wet conditions and is easy to keep clean. But, you don't need the durability of steel for a concession trailer. Aluminum would outlast the trailer by a couple of hundred years.
Alternatively, you could simply buy aluminum diamond plating like this:
and screw it down. To cut it, just use a cheap tungsten carbide bit wood blade on a table saw. Here in Winnipeg, I buy aluminum thresholds from Northwest Weatherstripping and he just uses a tungsten carbide blade to cut it with, but they do use some kind of lubricant (I think it's a lubricant.) on the blade before cutting.
Alternatively, you can just cut it with a jig saw and bimetal blade. An ordinary file makes quick work of filing off any burrs along the cut edge.