Overall a great cruise! My last was in the mid eighties and there is now a world of difference.
The Navigator is really a beautiful ship, comfortable and well maintained (I live in Florida and have been boating for over twenty years, so I can really appreciate this ship).
I booked my cruise online at the RCL website, overall very easy and my cost was probably the same as going through an agent. I drove to the port of Miami and parked in a covered garage directly across from the embarkation point ($12/day) and after about 2.5 hours later was on the ship eating a late lunch in the Windjammer (buffet restaurant of the ship).