I learned a long time ago, not to play a doctor, tax account, or lawyer- there are professionals who should be consulted on serious matters. As civilians, laymen, or ordinary folks (photographers included) we shod be apprised of the laws and the rights we have as citizens. As a professional photographer, I try to have a working knowledge of commercial law, copyright law, and privacy as well as private property issues, but I won't second-guess my lawyer. I do a good volume of location work so I will consult with my lawyer from time to time to make certain that I have the right protective and indemnification measures in my contacts when I am operating on private property. I would rate pay a nominal consultation fee that has to pay a whopping legal fee to defend or launch a lawsuit.
Other than that, one simply needs to apply common sense. Weh you analyze their "no camera" policies, in certain cases, they do make sense. At concerts, entertainment venues, professional sporting events, live theatrical performances, there are many legalities as to the exclusivity of the performers' or athletes' images, profiting from a copyrighted or proprietary material, etc., and of course, preventing interference with the enjoyment other audience members. Many venues will require accredited press credentials.
As for hotels- Really?! is there an expectation of privacy in a public area, lobby, hallway, or dining facility? All this nonsense about folks cheating on their partners or otherwise misbehaving- well. If they carry on in public places they take their chances. So. here's where the common sense ends and the silliness prevails. Enter, Joe Photographer with his long white interchangeable lens. He's in town, staying at a posh hotel, to shoot some landscapes, wildlife, a sports event, or do some street photography maybe just wants some nice vacation shots of his wife in the lobby. Is he there to do surveillance photography of folks doing naughty things- part of a blackmail scheme?- is he a private detective? REALLY? What he gonna do- shoot pictures through keyholes- there aren't any keyholes anymore- most hotels don't even have keys- they have fobs!
Back to our cheating spouses and other outlaws, doing their dirty deeds in the halls of the hotel- Nowadays, their worries are not a guy with a fancy camera. There are closed-circuit and security cameras everywhere. There are millions of folks with cellphones that videograph everything from cute selfies to murders in progress. There are now cellphones that are capable of high-resolution images with zoom lenses and you work surprisingly well in low light- and they fit in a shirt pocket! When rioters, insurrectionists, and other bad guys do their things, they take selfies and candid shots of the "event". All the criminal evidence against them was produced by the perpetrators!
When major hotels are hosting VIP guests and high-profile events, there are security arrangements in place, and celebrities, politicians, and business moguls are used to the media and photographers and know how to use them to the advantage or avoid them if they so desire.
Any professional photographer worth his or her salt is not gonna set up a big shoot on private property without securing permission and paying whatever fees are required. Those kids of session are no goon be don at high traffic areas and are oftentimes carried out in the middle of the night in a cordoned-off area. Anyone who becomes a nuisance on private property deserves to be chased off. An innocent paying guest in a hotel, who is carrying an advanced camera shod not be accosted by security personally, especially if he or she is not disturbing anyone, causing a disturbance, or blocking or interfering with traffic. It's discourteous and disrespectful! Even if the "offending" photographer is a professional, but is not using the venue to do professional work and is simply on vacation or just shoot for his own personal purposes- who's business is it what a person's profession is? What is even more ill-informed and downright stupid- how can anyone determine one's professionalism or lack thereof by the length or color of the equipment or whether or not the lens comes off the biody.
At the end of the day, there is very little anyone can do to counteract nonsensical policies, after all, there are actual laws that are unfair, outmoded, ill-conceived and archaic- and they are still on the books! An ounce of prevention is worth a pound of cure- especially if there is no cure! If you are planning a stay at a hotel and want to avoid any aggravation, find out the policies in advance and make your arrangement accordingly.
I rest my case- it's heavy, it's full of cameras and long lenses!