We went last year and while their website specifically said no firearms, there was no wanding or detectors. There are so many knives coming in and out it would be impossible to check for firearms and keep the lines moving. I will say this...buy your ticket online! If you wait to buy when you get there, the lines are insane and it can be over an hour or more waiting in them. You will cuss yourself.
Would have liked to go again this year but my sister has to work that weekend.