Good information, Ron. I have even heard that some vehicles may require a computer "reboot" if the battery is disconnected though I have not verified this. I purchased a battery tender (Deltran Battery Tender - 4 amp) and will remove the coach batteries and keep them charged in the garage. I will not remove the engine battery but charge it in place intermittently with the Battery Tender. The unit has both 6 and 12 volt settings and has a four-stage charging sequence, 5 year warranty - and works on lead, AGM and lithium batteries.
Finally, I had my new tires installed today and dealt with Discount Tires. Best tire-buying experience ever! Matched the best price I could find (from 200 miles away), had their own rebate program with Michelin, offer a lifetime balance/rotation, have 900 stores nationwide but best of all...incredible customer service and excellent work. I watched the entire process and talked with the technician periodically (he was actually the manager but took on my project). Their workers function as a team helping one another in an amazing display of teamwork. I rarely see this level of attention to detail and customer service so I had to share my experience.
Thanks again for all the advice and recommendations...I've learned a lot.
Oh, and Ron Dittmer, thanks to your advice about putting mouse traps in the engine compartment, I caught two mice right away...yikes!