Looking for advice from anyone who has rented a car while in port at Maui. We'll be on POA - arriving at 8 a.m. on Nov. 16, staying overnight and departing at 6 p.m. on Nov. 17. We'd like to do the Hana Highway on Nov. 16 and sunrise at Haleakala on Nov. 17 plus explore on our own, avoiding excursions - ship or otherwise. We've rented a car on Maui previously, but on a land vacation, not a cruise, so we know what the drive to Hana is like, as well as to Haleakala in the dark! Interested in others' car rental experiences - how easy is it to keep the car overnight, parking at the port, etc. Thanks in advance! :)