Yes
Yes but if there surgical steel it shouldn't go off. I have piercings and was at a concert on Sunday no issues.
Yes, they have walk-through metal detectors. They will also use wands if the detector goes off. If you don't want certain parts wanded or if you have been this route and it helps to determine the metal you're wearing be forewarned. Good luck. I didn't see any big problems when I was there and it was a pretty-mixed crowd.
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