Aaaaaaaagh! (Now you know why I'm in a bad mood, Marnie!)
I think you should definitely come -- can you imagine the hilarity as Sharon and Jill and I see how far we can send the wheelchair down sloping hills?! And, if you go the Steel FastPass route, we'd get into sooooo much trouble!
As for the airplane -- which will not be fun -- I'd call your airline and see what they suggest.
Then, call IPO and see what wonderful perks you can wring out of the injury. (I totally think a broken ankle trumps my MS! I can hear it now... "I have a broken booooooone!")
If it starts to hurt, we'll numb it with FABs!
Eileen
PS - Karen, I don't have a problem renting a car just to come pick you up at the airport... or we could rent a car for the trip and we could drive you and the wheelchair everywhere...
Anything, ANYTHING to get you to come have fun with us. (Bob gave me birthday money and I'll gladly spend it on you, m'dear!)