re: With 10 or more weapons in the possession of Paddock

10 plus guns and presumably a couple thousand rounds of ammo is not light weight or small.

Getting that weaponry up to the 32nd floor when you have to walk through the casino floor to get to the elevators seems a difficult task.

I would think that even with bell hops and luggage carts, the size and or weight of the luggage should have at least caught the eye of the security at Mandalay Bay. Unless of course he had the room for a week or more and brought it all in slowly in small quantitates and weights.