Any suggestions for arranging transportation from the KOA airport to the Mauna Lani Bay hotel? I will be arriving on Halloween, alone, and I tentatively made arrangements through the hotel but wonder if there isn't a shuttle service that might be less expensive. I am not interested in renting a car for just myself. The cost for the taxi ride set up by the hotel is $76 one way. Is this simply what I should expect to pay or are there other less expensive alternatives? I am a "single, white female" arriving in the evening so safety is a concern! Thanks.