Why did he need 23 weapons? Seems like someone could have done just as much damage with one weapon and a bunch of ammo. I feel like it would be pretty trivial to bring a couple luggage cases in with that, plus some cameras, without hotel staff being suspicious, especially if you didn't bring any "normal" luggage with clothes or toiletries or the usual stuff people bring, to keep the total number of luggage pieces down.

Hotel staff certainly wouldn't find that with room inspections; they'd just see three or four pieces of luggage, which shouldn't raise any eyebrows. Then when the shooter decides to get started, they take everything out of the cases and set things up.

Like... this isn't rocket science. The only kind of room inspection that would actually stop these kinds of attacks would be if they do room searches, including opening and going through people's luggage. But I hope we can all agree that would be a huge invasion of privacy that no one should accept.

Of, course the actual way to stop -- or at least drastically reduce -- these sorts of attacks would be much stronger gun, ammo, and accessory controls. But of course the mouth-breathing 2A crowd (including most of SCOTUS) think guns are more important than people's lives.