I would give it a big YES, 2 nights ago my 5yr. old DD was jumping around in the house lost her footing and came down on her elbow. She ended up sustaining a small fracture that will require a semi-hard cast for about 3 weeks , we are on the 5/10 western. If it was bad enough to require pins or screws, etc. I would have exercised my option and cancelled/rebooked as the trip is as much for my kids as it is for me. You just never know what may happen.