However, stings generally occur in the context of on-call. Cops aren't going to send a provider or female officer into a situation that they have no control over.

I think the person whispering in your ear is most likely wearing a tin foil hat. lol

 
From a clients POV an outcall is MUCH safer in re to LE than an incall. Your chances of a "well reviewed TER provider" showing up to your hotel room with LE in tow while theoretically possible is about as likely as winning the lottery, TWICE.  

 
A  "non agency independent provider that’s been around a long time ." providing an outcall to your hotel is about the safest type of session you can schedule. The only way LE would allocate this many resources to something like this would be if they really wanted to get YOU, not some random john, but you in specific. IOW if you are the Governor of your state you "might" have something to worry about, but if you are not a household name IRL, you almost certainly have nothing to worry about.

I knew of a provider

I once spent a nite with a gentlemen from Cedar Rapids, IA.  He had me go through a series of detours and awkward requests in order to "start" our night. After the first round we had a chance to talk and I asked him. Why all the shenanigans before you trusted that I wasn't LE. He pulled out his phone and showed me an article with the pictures of 7 men lined up, he was the last picture. The article described. Men answering a 2 girl ad, they were doing out calls. He told me he knew one of the girls, infact he met her at a local strip club. 2years prior and has seen her countless times. According to him she later called his phone and apologized ..stating the police made her do it, she was facing drug charges. This is second hand info but I. Doubt he lied and wouldn't put it past anyone; provider or client. His final statement was that he should've trusted his gut. He had a bad feeling and should've cancelled.