We take a car service such as your ride from the airport to the POR where we are staying again. Then we splurged a little bit and hired a limo to take us from POR to the port. We are a family of 5 and we got round trip from POR to the port and back from the port to the airport for $250.00 plus tip. Total it will cost us about $350.00 for the 3 stops but it is easier for us to do it that way than rent a car and we dont want to deal with trying to get to the port by ourselves. The limo will give us a complimentary grocery stop, a disney plush character for a "ride along" to the port, disney movie of our choice, a booster seat for our 5 year old and complimentary soft drinks and water. Last time we did this we used your ride for the whole thing. They took us from airport to the Poly (we did the 3 day land/4 day sea) and then we arranged for them to pick us up at AKL on the morning of the cruise (we went to AK for the morning and left our luggage with the bell desk at the poly) they took us from AKL to the Poly to get the luggage, then took us to the port from there. They picked us back up at the port and took my inlaws to a hotel near the airport because they were leaving early the next morning, took all of us including the inlaws after they checked in to the POR, picked inlaws back up at POR at 10pm that night and took them to their hotel and then picked us up 2 days later at POR and took us to the airport. It was veyr convenient and easy to do. I would suggest going to some transportation websites and getting some quotes.
Heidi