What are the things you want to ban from EDM events?

I know this post will be probably controversial, but i think tobacco should be banned from EDM events (though designated smoking areas must be provided). the reason is that it's toxic to your health and to the health of others. and from a fire standpoint, it's not safe (tobacco is already banned in interiors in my country France).

The other thing that should be banned is non-security people wearing security clothes. real security should be very very easy to recognize, and wearing security clothes when you have never worked in a security-related field could cause confusion, or worse, damage the reputation of security people.