I attended a convention recently but didn't wear a badge I was treated with the utmost suspicion. Particularly when I arrived during the sessions one day. The attendant didn't want me wandering off to find a seat on my own. He virtually insisted that I would have to follow him.
Any other experiences like this or (being paranoid) is it just me?
Put it this way; if I was an interested person who just walked in to see what was going on. I wouldn't have stayed long as not only was I not made to feel welcome I was treated with total suspicion.