If for medical reasons you are unable to go/fly, we can write a letter for you (as well as any companion) that will typically allow you to get your money back for the flights. Hotels, cruises and other arrangements, though, are harder and might justify purchasing some travel insurance.
Have fun planning...
- Amy Nelson
P.S. Again, I am sorry you had to be present for the excitement associated with the treatment reaction. Just FYI: The gentleman is doing very well - left the ER after a few hours and called on Monday stating he felt fine."