We highly recommended renting a car for your trip. This will help you travel around the island easily!
If you are looking for convenience it's best to book with a rental car company that is at the airport (please check the address, it should be off Rodgers blvd.). There is another Enterprise and other companies that are about are 5-10 minute drive from the airport that sometimes offer cheaper rates, but would require taking a taxi or Uber first.
Most of our guests will likely choose to stay in Waikiki. This is a great central location and option for hotels and airbnb! Waikiki is about 35+ minutes from the ceremony and reception in Kahana Bay (please be mindful of possible traffic on the day of the wedding). Other popular locations if you want to be out of Waikiki are Kailua or Oahu's North Shore.