Flight:
The Oasis of the Seas home port is Fort Lauderdale Everglades. The Fort Lauderdale airport was a ten minute cab ride (roughly $13 per meter but I tipped $17). The Miami airport is about an hour ride. I highly recommend flying through FLL because it is less time with a squirmy toddler in a car. We did not bring a car seat and just held our daughter on our lap. We had no trouble getting a cab to take us. And we did not have to haul our child seat everywhere. However, you risk a ticket by not using a child seat to the risk is yours.
On our flight down we ha booked two seats in a row with a empty seat between us. I choose near the back of the plane in hopes that we would get a free seat.
During the flight we used an infant seat belt. This seat belt from KidsFlySafe is awesome and totally worth the $75 if you can’t borrow one from a friend. Alternatively I have seen postings on ebay where you can “rent” the seat belt.
Our flight landed at 9am so we had time kill at the airport.