I suggest using Non-Ethanol fuel all the time. Just my way of showing appreciation to my scooter (2013 Silver Wing). Here in Jacksonville, FL, there are at least a dozen stations that offer Non-Ethanol. Most sell 89 Octane, and, yes, it costs about $0.50 to $0.75 more that the ethanol contaminated stuff.
There are no ethanol free fueling sites around this part of Ohio.
Few Ohioans would own a scoot or a bike if only the nearly impossible to find ethanol free fuels were actually required to safely operate our rides. Since some weeks I am fueling my scooters nearly every day - I know I wouldn't own a scooter if I had to use that fuel.
I, too, want to care for my scooter engines - so I change the oil frequently & stop only at the Top Tier gas stations. (Shell mostly)
Marathon and the hugely popular Speedway stations here are NOT selling Top Tier fuels.
If Honda, Suzuki, Kymco, & Yamaha scooters - and Ducati and BMW motorcycles were being damaged due to ethanol blended fuels - I figure someone would be talking about it, and of course dealers would be closing.
Stig