Yes..Your bag will be scanned just like in Airport..
Yes you can, they have a scanner and metal detectors for backpacks for example
I dont see why not. There is a security checkpoint the same as they have at airports with the walk through scanner as well as the x ray conveyor belt for bags and purses. Just don't stuff it full of drugs, firearms, and weapons and you should be fine :)
Yes
You can take your suitcase with you, but they will check it in the security area before entering.
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