I've edited videos in AVID (industry standard), Final Cut, Adobe Premiere and have used Adobe After Effects for a lot of post processing work.
You are 100%
inaccurate in almost everything you said as it relates to video editing.
If you wanted to make a claim that someone took parts out or used motion tracking rotoscoping then you might have an argument. But even evidence of those two things aren't present in the video clips released thus far.
But let's get to the crux of the matter...you seem to have a general misunderstanding of how video editing works. It's not magic. There aren't tools to do the things you are suggesting easily. It's the reason that big VFX shops will still charge $50,000 to rotoscope a 30 second clip. It's a frame by frame job and extremely hard to not leave behind artifacts. NLEs are not Photoshop. Even in the hands of pros. Second...GUI tools that are put there to help with UX such as a "copy and paste scissors box (or something)" or the marquee tool or any fancy Final Cut/Premiere/AfterEffects/Avid plugin that you will undoubtedly search for to respond to me wouldn't make it through to the final video. Whatever tool you may have worked with or seen in action uses "red boxes" as a visual aid to help you work effectively. None of that stuff would ever make it into the final encoded video as you're suggesting. Not in AVID, Premiere, After Effects, Vegas, Final Cut, iMovie, Lightworks....NOTHING.
However, the tracking boxes you speak of are extremely common in security systems (exactly the opposite of what you're suggesting). They can be turned off and on. The boxes are there to gain your attention to pixels that are actively changing. Or areas where infrared is being disturbed. It's a "HEY! Look at this area right here!" feature. Here's someone building in the same feature into a $50 DIY setup. Take a look at their sample GIFS. Their box is green but it's the same idea:
http://www.pyimagesearch.com/2015/05/25/basic-motion-detection-and-tracking-with-python-and-opencv/
The feature is common across professional security camera systems.
Lastly, you're attempting to claim that someone at the hotel is professional enough to alter the videos but dumb enough to leave in "obvious" evidence (which doesn't exist). You can't have it both way.