Like coming onto the scene, I've come onto this topic late so a lot of what i believe has already been covered. I will say I was surprised that you don't need membership cards at the nights I've been to, it was standard practice at one time. It does allow some control (if not much) and members can sign others in if they want to, and it wouldn't be too much hassle in my mind. There again I'm new and have never seen incidences referred to in this topic.