I don't see the need to look down at the window buttons to operate the switches.
I'm not sure what you mean by the rear picnic table but there is a small flip open table for the front passengers in the arm rest.
Not sure if it is in all 4R's, but it is a platform in the cargo area that acts like a shelf (raises off the cargo floor). The manual calls it a picnic table. Like other references, it also slopes downward allowing items to roll out when the liftgate is opened.
It's nice to tuck away emergency items under it, but I'm not sure what the shelf handles in weight. So, it never gets used in my truck.