I picked the Hertz address at KOA and entered it in Uber and Lyft and they both say they are not able to give me a quote. I'll try the mobile app. later.
The VOG doesn't bother us much. We have friends that live there and they say it is tolerable. But not if you have respiratory issues.
We're considering renting a car when we arrive so we can do all our shopping and then returning it the following day. A shuttle form KOA into town runs about $18 o/w. Still looking at all options.