Hi Keith!
Your vacation is coming up soon and I am sure your entire family is excited and counting down the days!
It sounds like you will be traveling with some young ones and will need a stroller during your stay. You have a few options to consider if you don't want to bring one from home. All of the four theme parks as well as Disney Springs will have strollers available for
Rent. You can rent these for one day or the length of stay but park strollers must remain in the park. You cannot take them back to the Disney resorts.
If you feel you will need one at the resort you can do two things. The resort shops have a small but very good umbrella stroller for sale for about $50-$60. This stroller can fold up easily for the bus rides and can lean back for naps and does have a cover. I have found using a small umbrella stroller is far easier then the large ones that so many guests bring into the parks.
If this does not fit your needs you can rent strollers of all types and sizes from outside rental companies. These companies will deliver and pick up at your resort. The resorts themselves do not rent strollers. Disney acknowledges three companies that you can see
HERE. You will simply need to contact them and set up the dates of your stroller rental and then when you arrive the stroller should be there at your resort waiting for you.
You have options and hope you can find one that best suits your needs.