is there transportation from the airport to our rooms and at the end of our stay transportation back to the airport

As Disney World is no longer providing the complimentary Magical Express, you have many options for ground transportation. One would be Mears Connect which can be set up when you arrive initially at the airport or in advance. You have the option to do a round trip or one way. Their's is a per person, per trip charge. We found them to be very reasonable. However, if you have more than 2 or 3 in your party, you may opt for an Uber or a Lyft. That price would be for the car load of passengers and is you transportation from the airport to the resort vs sharing the bus ride with others and making multiple stops as on Mears. Of course, another option would be to rent a car. This would be best if booked well in advance. While this does allow more flexibility and freedom, you do need to be mindful of refilling the gas tank, and allowing plenty of time for traffic when returning to drop off the vehicle. This may be a good option if you have an annual pass and may want to stop at other places.

There is if you set up a pickup time they mears connect, their company will pick you up Infront of the resort at a specific time a few hours before your flight and drop you off at the airport