King Airport Shuttle is the only shuttle service I recommend if you are visiting Oahu. They are prompt, courteous, reliable, economical, friendly and knowledgeable. Their vehicles are clean, roomy and air-conditioned. You don't share a ride with anyone else but your own family. They can accommodate up to 4 people for the same $30 fee. Pretty economical compared to other services. Thank you, Alex, for a great, smooth ride and all your great advice.
You can get all around the island reasonably with the shuttle. The taxi rides around see so expensive. I've never watched the meter keep moving while sitting at s stop light. The shuttle ride is still crazy but something to experience.