PRINCIPLE 2. NO WRONG ANSWERS
Yes, I believe this with all of my heart. Now, before I make a whole slough of SCA folks mad, I want to point out that I LOVE the SCA! It's one of the reasons I have a dang company. I love the portion of people who love to dress up, camp together, and beat each other with weapons. Yes please. What a fantastic way to get modern-day aggression out of your system!! My only beef with them (what a strange phrase...."beef with"...I would have thought that "having beef" with someone would be an enjoyable occasion with much celebration and calories....) is when the people that are super-hard-core-history-buffs come up and rip into some poor woman for her gown in the hue of purple, when CLEARLY she should know better, since she is but a mere peasant.
I get it. I love dressing up. I love the idea of playing characters. I have a deep reverence for someone who sits and hand-sews their whole entire wardrobe with sinew and a needle made of a squirrel bone. I love people who lovingly hand-dye their fabric that they wove from their own cat hair and corn husks. Heck yes to dousing your pieces in beet juice for weeks to get a particular hue. I am IMPRESSED. Also, I'm amazed at the people who research history from every angle, tirelessly consuming wikipedia articles and scouring images of period paintings. I even like it when two "period nazis" (not my term. This term has been around for a LONG freaking time in the SCA) get into a heated discussion over how a codpiece would have been attached. It's exciting to be so passionate about something! I just wish that those blessed people might tone it down slightly when they're in the presence of a family who, let's say, just showed up at the renaissance festival in clothing that they made from a McCall's pattern and $1 fabric from Wal-Mart. (Bravo to this mom! That was TOTALLY my family!) Those people just want to come and have fun and escape the horrors of modern-day stress. Let them have it. Please don't accost them and tell them how wrong every piece of their clothing is!
Now, on the other hand, if you are in a guild, and your terrifying guild mistress tells you what to wear, you had better dang wear it. I have had my posterior whooped by many MANY succinct guild mistresses, and I would suggest you NOT mess with them. I understand when guilds want to portray an accurate representation of their time period. That's the whole idea of re-enactment. I would professionally suggest that you stay FAR away from my booth if you're trying to go for re-enacting history. Obviously I want you as a customer, but I will be frank, and let you know, right out of the gate that our stuff is NOT period appropriate. I've said this before and I'll say it again. When people come up to my booth and politely ask, "Wow, what period in history is this clothing from" I politely respond, "roughly, circa Spring of 2014".