Yes, call
DCL soon to remove the transfers from your reservation.
We drove from the DFW area and prefer it. It is a long trip, but I fly alot and I can't imagine putting the family through the hassle of the 'security' of most airports.
Other driving advantages:
No cab / shuttle from home to airport
No airport check in line or sky cab tips on 8 bags
No MCO porter tips
No transfer / limo charges
Car at Hotel for last minute items, and trip to port.
No cab / hotel shuttle
No hotel porter / shuttle tips
None of this all again for the trip home
With driving you have meals, gas, some tips and the parking fee.
It was a long drive but for us it saved $1200 dollars in airfare.
That's a deposit for the next cruise