Yes, definitely, on both counts. Request wheelchair assistance from the airline (to use in the terminals) and also ask the cruise line about the possibility of renting a wheelchair or bringing your own - or have your travel agent do this for you if you booked the trip through them. If you do plan to bring your own wheelchair on the trip, be sure to let the airline know; they will have you check it, either at check-in (in which case you would be using their wheelchair service to the gate) or at the gate. Be sure to do this as soon as possible. You might ask your doctor if there are any special precautions you should take. Find out if your cabin on the ship has a tub or just a shower stall - that will make a difference in your personal hygiene plans as well. Good luck - enjoy your cruise despite the injury!