Taking a Royal Caribbean cruise to Hawaii that departs in Ensenada, Mexico. I need to get to the San Diego airport. Royal Caribbean offers a bus service for $67 per person that would take us right to the airport. I have found I could take the ABC bus in Mexico to the boarder and then the San Diego Trolley to the airport for $9 total. Anybody have any experiences they could share? I would like to save the cash, but I want to make sure I won't run into any problems. Any advise would be greatly appreciated.