Thank you for the replies! It really helps to hear everyone's anecdotal experiences, even knowing that everyone is different. While we did have to wait an extra couple of weeks to see the surgeon we are very lucky that we ended up with one who has an excellent reputation with athletes--my daughter is a runner--cross country, 400m, and 800m. So it's already devastating enough that she is going to miss track season this spring, cross country season in the fall, and basketball next winter (and, of course, the current basketball season), especially since it will be her senior year of high school. First of all, the surgeon will not consider the surgery any time soon since she needs to recover strength in her leg. I totally agree that she needs to have surgery as soon as possible, as it will be at least 6 months after the surgery before she can run the way she is accustomed to, but whether or not we go on the vacation won't affect when she has the surgery. In fact, he told her she could wait until summer so she wouldn't miss any classes if she wanted so maybe it's not as bad as others who have posted responses to my question.
Given the disappointments she's already faced, and other things our family has experienced over the past year, she and her brothers would be completely devastated if I told them no Disney vacation. This will be our fifth trip, and we will be staying at Fort Wilderness, so I might just add the no-expiration option on our tickets, do what we feel like, and spend more time at the resort than we'd anticipated. From everything I've read, we'll find enough to do.
I have never traveled with someone with a temporary disability. Should we just rent a wheelchair? Do you park the wheelchairs where we used to park strollers when the kids were younger and just collect them after the ride? Given the way we have always experienced the parks in the past (heavy use of Fastpasses and unofficial touring plans and minimal waits in line) I really think standing in line won't be a problem for her, especially if she can bring her crutches (or even just one) to lean on. Will this be possible? It's mainly all of the walking that I'm worried about. If she gets too tired, we'll just head back to FW, no big deal, especially since we're planning another trip in August (hopefully she'll be healed enough by THAT time to enjoy the parks!).
Thank you, everyone, for your candid responses. I really appreciate everyone's input!!!