Security will not allow weapons made from metal. None. Zero. Zilch. Doesn't matter who you are or whether or not you have an exhibitor badge.
Security will likely check your weapons - most plastic and foam will be allowed. However, that sucker better not be capable of firing anything.
If security tells you no, you very politely turn around and take it back to your vehicle. Once again, I don't care if the guy right in front of you got through with the very same thing. They have a job to do, and they will do it.
Never, ever, ever travel around with that weapon out in the open aside from being inside of the facility in costume. Cover it in a pillowcase if you have to but keep it covered up. Definitely don't walk from your car to the facility with it uncovered. You may bring yourself a world of unwanted attention.
The rule about not pointing weapons at anyone is part of the EVENT FAQ already. Read it, know it. Never, ever, ever point it at anyone. Not even for a photo. I don't care if they ask. Don't do it. Weapons should be pointed up or down but never at someone.
The security staff at each location will be different but we will default to the same rule and there really is only one main rule - WE DEFAULT TO WHAT THEY SAY. Even if that means you can't bring something in. Their concern is not just weapons that can fire but also props that if swung can actually hurt someone, so if you've got a foam weapon with a heavy core - chances are they aren't going to allow for that.
As for the Canadians? We've been doing this forever because we have always had to. We can't even bring wooden handled brooms to conventions anymore where I live because it's solid enough to hurt someone. Bye, bye Quidditch costume! One of my Garrison's Sandtroopers walked to his car years ago with an uncovered BFG weapon and someone called the cops. Another decided to walk to an event that was close to his house in his TK kit with his E-ll blaster holstered at his side. The cops were called. For a time the entire 501st couldn't do any event with weapons. That included a red carpet movie release event in California. Members complained. A lot. But in the end, we did what we were told. The complaining is pointless.
Here's the link to the Event FAQ which contains information about a lot of stuff.
Event FAQ
Please note as well - NO TEABAGGING. EVER.
The point to all of this is that it's not up to any of us what makes sense or what is ridiculous or what they should be allowing in. We must follow their rules or we can watch the fun of the convention via photos on Instagram. I trust you all very much not to argue. Answer the questions as best you can and if they say no, it's no.