The shuttle bus from Dollar at the Big Island airport is less frequent than other companies, so we had to wait a bit. The staff at the branch had a good attitude but kept trying to upgrade our reservation for an extra fee. Since we had already booked a large SUV, we didn't want to upgrade, but the staff insisted that our reserved model couldn't go to Waipio Valley and even called the manager to offer us a discount. Seeing how eager they were to make money, we agreed to upgrade to a 5.6L Nissan SUV. After traveling around the Big Island, I feel a mid-sized SUV would be sufficient for a family of three because it rained when we went to Waipio Valley, and we couldn’t go to the valley floor due to the fog. Returning the car was very straightforward and convenient.