yeah, the dissonance between character and cosplayer expectations can be frustrating in both directions.
When I wore Madotsuki at comiccon a few years back, I overheard a few guys walking away from me and complaining that I had my eyes open. Something along the lines of "The REAL Mado would have her eyes closed!"
I'm not sure if they meant in photos, which is reasonable, or that I had them open while I was walking around, which would be ridiculous.
I had forgotten that I probably should have eyes closed during photos, so after hearing that comment, I kept my eyes closed whenever someone asked for a photo for the rest of the day. And guess what? Literally everyone said "Oh, I'm sorry, your eyes were closed, let me take it again."
Another time was when I cosplayed Stocking Anarchy at the anime club's Halloween party. There was a costume contest where we were supposed to walk out like it was a runway. I thought it would be funny to instead just keep going until I reached the snack table at the back of the room and grab some cupcakes. The real Stocking wouldn't give a crap about posing, she would just want to grab some sweets!
yeah…nobody got it. The club president was shouting "No, little one, you're going the wrong way! You're supposed to walk over here!"
Sometimes staying in character can confuse people…