My main worries are the extra wear and maintenance on the pump, the electrical usage, the "strain" on the well itself from a large fill (if any, I don't know much about wells.

Any usage of SEO needed for this ?

That will show if there was any gas usage during that time.

Additionally the landlords paying water the utility companies even with no leaks are raising water and sewer per gallon usage rates which can eat into returns.

I have a number of suggestions, but without knowing your complete picture, it would be inappropriate for me to share them.Find your self a fee-based CERTIFIED FINANCIAL PLANNER(TM).  

You can have them pay for their own water and garbage. saves you 12% (also makes them more conscious of water usage thus being of a more green mindset)You have prop mang at 10 %...will you be doing it yourself for a few years?

Lastly and most importantly, anyone have any experience with negotiating a license/usage agreement with a nearby hotel to use their amenities (gym, parking) for the benefit of their tenants?

(I plan to do this to accommodate the extra wear/tear, water usage, etc.); Below is the message i received from the tenant:The lease does not say anything about a specific increase in price, but it does say "only the persons below will reside in the property" and his name is the only one listed.Question: Would this be an appropriate reply?"

I don't charge my tenants for this stuff, because it is normal usage, and I don't want them to fix things themselves.

@Ujwal Velagapudi - The units themselves are separately metered for everything except water usage, however each unit has its own hot water heater.