Family friendly as in you're not wearing nothing but a g-string. There are horror costumes aplenty at Expo, especially during the October one cos of Halloween. That rule is mainly there for folks whose idea of a costume is to cover up the bare minimum. Jason Vorhees is kinda tasteful by comparison really XD As long as you don't terrorise any small children a cult icon character like that shouldn't be an issue. Basically if you had small children and wouldn't want them to see x, y or z then don't wear or do those things. Just bear in mind that even if your costume does meet the rules MCM still have the right to ask you to remove parts of your costume, cover it up or change out of it if they feel it's inappropriate or receive any complaints. An example being the Yoko cosplayer I talked about earlier in the thread.
Ah right thanks for the info, I have never been to a Comic Con, so I am getting all the info I need. I emailed them and they said horror is fine, one of my good friends told me, the kids find the joker just has scary as Jason, if not more scarier. The good thing with the remake, my costume has a holster, so I can keep my machete in the holster.
They also said about the revealing costume's, it is forbidding, they must be covered up.
Here is what I will look like for Comic Con 2013
I wanted to ask you, you said they would want me to remove some things, anything you see here that would need removing