We rented two double City Mini GTs from Baby Wheels Orlando on our November 2013 trip, and we had no problems with the rental.
We went with another family, so had a total of 4 girls under the age of 4. We stayed offsite, and the strollers were waiting in front of the house when we arrived. One was a little worn, but they were clean. Included was a rain cover and a small cooler that attached to the back.