I didn't realize the transfer would be a zoo (it was very quick and easy with RCCL). Since transfers are included with our airfare and if we opt to take the cab will Carnival still take care of our luggage without us having to touch it at the airport?
If your doing the Ship transfer you still have to get your luggage off of the belt and then get it to the Bus. You'd be doing yourselves a huge favour by saying to heck with the Bus and grab a Cab. Plus, you'd get there early and most likely near the front of the line.
Yes...If you are only going back to Miami International, save yourself the frustration and jump in a cab at the port after you collect your bags. Again, otherwise be prepared to stand in line for the transfer bus.