That's great that some DCQC units are/will be installed there. I'm headed to Maui for two weeks next summer and have submitted a quote request from you Shaun.
I see on plug share that some of you in the Pukalani area have added yourselves. That's certainly useful! Too bad no one in Hana has. Do you know if there are spots along the way where a Quick-220 unit would be of use? I would likely bring mine along. Also, do you have UpgradedEVSEs, or should I bring that too?
For rental cars in general, it can be a drag to choose what size vehicle as I have to get my family, and our luggage, to the hotel. This often makes us up-size to a car/SUV larger than we need for the whole rest of the vacation of just driving people and swim gear around. Perhaps you could install one of my hitches and rent out platform racks to folks for their suitcases!
(That's how I carry lots of stuff on my Leaf.) Or offer a suitcase delivery service!