Is a rental car needed in Maui? Staying at the Hyatt and considering renting for 1 day to see sunrise at Haleakala and using shuttle to/from airport. We will be there 6 days but just not sure it is worth renting the entire time as I will have to pay for parking. Cost of rental car is $300 + 70 in parking fees. Plan on spending most of our time at the resort and doing watersports which I assume we can walk to from the hotel. Any comments?