Hi, Vicki!
Welcome to the Disney Parks Moms Panel, and thanks for your question.
Single and double strollers can be rented at all four of the Walt Disney World Resort theme parks and the Downtown Disney area. You have the option of renting on a daily basis or for multiple days. Pre-paying for a length-of-stay stroller rental entitles you to a discounted rate per day. Strollers can’t be removed from the parks, but you can present your valid receipt upon arrival at any theme park or Downtown Disney to receive another stroller.
Prices are subject to change, but the current cost to rent a single stroller at the resort is $15 for one day or $13 per day for a pre-paid, length-of-stay rental. A double stroller is $31 for one day or $27 per day for a pre-paid, length-of-stay rental. The strollers have a sun canopy but are otherwise fairly basic and lack some of the features your youngsters might be used to, like padded, reclining seats.
I hope this helps, Vicki, and that your family has a wonderful Walt Disney World visit. Please feel free to write back with any other questions you may have as you continue to plan your pixie-dusted vacation!
Wishing you magic,
Courtney