Thanks Lou. The long-term forwarding is handled by a regional office (Oakland in our case), which might make it more reliable than the local post office.
However, I wonder if we might have issues when, during summer months, we move to our summer home in WY, then to OH, and back to WY, before returning home. Timing of cutoff for one location and turn on for the next might be an issue, so I might need to do the changes early to avoid having stuff delivered to a location we've already left (been there, done that). Apologies if I sound paranoid, but I have no confidence in USPS.
Do they also forward parcels? While we're at our WY location, there are different mailing addresses for letters and parcels, but I should be able to work that out with the UPS store.