Apple Watch 4 Battery Percentage Dropping 8% Per Hour

I purchased an Apple Watch 4 with cellular a week ago. I've owned a Apple Watch 2 for three years and it still lasts slightly more than two days on a charge. The cellular is NOT activated on my new watch. I have pared back all updating, simplified the face, went to gray scale, eliminated the wrist waking movements, eliminated Siri, heart monitoring, etc. and still would not make it a day on a charge. This evening I've took it back to the configuration my Watch 2 utilized and monitored the hourly loss with bluetooth active versus bluetooth switched off on the watch. This was done to see if something on my phone was repeatedly asking my watch to do some action. The battery loss was 8% per hour either way (watch bluetooth on or watch bluetooth off). This indicates the phone is not silently making the watch work/do actions for it. From doing lots of searching on Apple 4 Watch battery life, its looking like the supposedly inactive cellular aspect of my watch (again, the cellular has not been activated and should not be talking to Verizon) is apparently silently mumbling to local cell phone towers, at least that's my guess as to why it is losing 8% battery life per hour.

I've got the latest software on the watch and iPhone, have paired the iPhone and watch initially as a new watch with my former watch's information, erased the watch, restarted the iPhone and paired again as a new phone with no former ties to my previous watch. All this fiddling around to get the battery consumption to last a whole day is starting to divert me from doing serious paycheck oriented work. I will be bringing watch back to the Apple Store where I bought it last Saturday (unfortunately, Apple's policy is you have to bring it back to to the original store) thus putting a whole lot more CO2 in the air than I would if it could be returned to a much closer Apple Store. I am going to ask to turn it in for a non-cellular version.

Anyone got any advice relating to:

a. Returning a Watch 4 Cellular for a Watch 4 GPS only version within 8 days of purchase

b. A magical cure for getting basic activity consumption down to at least 5% per hour (Note: my Apple Watch 2 was utilizing about 3.0% per hour as I'd wear it for 18 hours and have about 46% showing).

c. The situation the most like my issue: I read one person's post where he and his spouse each got a Watch 4 recently. His goes two days. His spouse ran out of battery at about the same pace as my Watch 4. His inquiry to a Genius provided some information about some Watch 4 production dates having an issue needing a future software fix. Anyone here received similar information?

Thanks for any help or information.