We just got back from our week at WDW. I did get a GAC, with the stroller tagged as a wheelchair for my back issues. It was a huge help in the parks, but not at all for the buses. I spent two days at the resort (AKL) when my back was hurting and I did not want to struggle and worsen the strain getting the stroller and baby on/off the bus. At least the Kidani and Jambo pools were a nice way to spend an afternoon so it wasn't a total waste. The park CMs were all great. Even at the Haunted Mansion and POTC, they were super nice and helpful. I will have to have a better plan in the future for how to handle the buses.