The best way to get from orlando international airporto (MCO) to port canaveral is to arrange a private transportation. May recommendation is to use the service of LuxTransO. They offer quality service, friendly attitude, the drivers will wait for you on time, will help you with the luggage and can help you with some tips. You can check their plans on Private Orlando Airport (MCO) to Port Canaveral Transportation
there is 10% OFF on all round trips from MCO. Good luck!