My Turn.
To
@French Colonial original question my answer is one should try to be as HC/PC as possible and reasonable to the time period in question, AND adhering to the rules (if any) set forth by the organizer/organizers. If you don't like the rules don't go. Since my era is the North American Fur Trade from the late 1700's to 1840, if an event is to portray that time period, then to the items
@French Colonial listed I say absolutely not.
Having said that. If I was standing buck naked at an event I could never be truly HC/PC because the lenses in my eyes have been replaced. So there's that.
Some kind of compromise has to be made because as
@tenngun has pointed out he'd charge a $100k to help one accomplish pure HC/PC and I agreed that's what it would cost, and still probably not possible. Just using black powder made EXACTLY as it was made back in the day would probably be impossible. The British got most of their poop nitrate from the toilets of India (because of its huge population vast amounts were readily available). Americans got a large portion of it from bat caves. Where does it come from today? (I don't honestly know)
So I recently attended a small Mountain Man Rendezvous up here. The usual drill, try and be as HC/PC as you can to the Mountain Man era, with primitive and tin tipi areas. Problem was half of my stuff I shipped down south thinking I was doing Rendezvous' there this year. But Trudeau thinks I might be related to Typhoid Mary so he wouldn't let me through Canada.
My cooking/coffee/food/water/camp stuff including my tent stakes are down south. The rest of the stuff up here.
I had to substitute giant nails for my tent stakes. Cooking/coffee/food/water/camp became Mountain House, Instant Coffee, Jet Boil, and plastic water jugs. All neatly hidden away in burlap sacks and used behind closed tent flaps. I was bummed and felt a bit guilty. Up until the Booshway's three adult grandsons showed up in blue jeans, sneakers and wife beaters (which soon came off) and stayed in camp. And until guys showed up at the firing line wearing modern sunglasses, and wearing modern clothes. And until the beer cans and whiskey bottles came out at night in the Booshway's camp. I felt sorry for the other ten camps or so that tried their very best to "do it right".
Will I go to the next one they put on next month? Yes, in part cause they are the only ones in the state. I've got my proper tent stakes so I'm happy about that, but I'll still be using Mountain House, Instant Coffee, Jet Boil, and plastic water jugs and this time I won't feel a bit guilty about it.
Outwardly I will be as HC/PC as I can be, knowing that a few others will as well, while most won't. And that's okay because it's their event and their rules. I'll still have a good time and that's why we are all in this, yes. And hopefully inspire others to put a little more effort into it next time- even though I know they won't. Lead by example and don't whine without offering up a solution, that's my philosophy.