Much of the "we stand up to authority" hubbub of US security researchers and developers is mostly an act. The sentiment is there to comfort the participants and validate their existence, just like in many other industries. While I hope I am wrong I wouldn't expect people not to fold when it matters. Somewhat understandably so since the current alternative is arguably, or at least ultimately, exile.

Just look at this situation. Unless hotel security have been breaking the law, which is unlikely, staying at these hotels means they can legally search your room and possibly your things. The only thing standing in the way of this is the reaction from the organizers and attendees. So if you care about your rights you don't really have much of a choice than to react and moving, at least out of Las Vegas, shouldn't be a hard decision.

And this would be illegal in at least part of Europe since a hotel room is categorized as a temporary residence.