One of the ranges/shops near me has that rule. I've CC'd and OC'd there without unloading and no one ever says a thing. Why? Because they aren't looking to see who's in compliance with their rule. That's my opinion anyway.
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NRA Certified Instructor & Range Safety Officer
Teaching classes in Lorton VA & Springfield VA
PM me up if you need an class, RSO or safety briefing
That's the place I was thinking of.
I'll shoot there. But I'll BUY from Guns & Ammo Warehouse or from Dawson's (or Trader Jerry's).