I will confess, the concern is in the back of my mind when heading to WDW. It doesn't stop me from going, but it is something I think about....never did before. I think it would be fascinating to get an inside peek into their security measures.....they have to be incredible. I often wonder if the ticket turnstiles have xray or metal detectors in them.
Last year we arrived at MK. DH took DD through while I went to bag check. My inlaws were watching DH and DD come through and noticed a man watching DH. Within a minute DH had 4 plain clothes guys approach and then 1 Disney security in uniform. DH was wearing baggy cargo shorts and an untucked oversized T-Shirt. They asked him what was in his pockets (phone, keys, wallet...normal stuff) and then asked him to raise his shirt to show his waist band. Nothing there either.
They then asked him for ID - at which point they saw his badge (he's a cop). They looked at his ID, shook his hand and said have a good day.
Whatever it was they thought they saw to check him out, it was done swiftly and with hardly anyone even noticing. Stealth like.