I am sure
DCL would be understanding about it.
It's not DCL you have to deal with. It's the the insurance company you'll will have to deal with, they are a third party who's insurance DCL sells.
I tried reading their liturature as we tried to recently decide the go/stay question due to illness. Here is my attempts at trying to simplify what page 8 of the protection plan seems to be trying to say.
Coverage is provided to cover expenses associated with cancellation of your trip due to a medical condition requiring you or a fimily member to receive treatment by a licensed physician who advises cancellation of the trip. An actual examination or visit must take place before the canellation is made.
Basically, DCL keeps all your money and you have to file a claim with the insurance company to try to recoup your loss. In addition, you might have to hurry if you know you'll have to cancel because I recall something about you have to cancel as soon as reasonably possible to avoid additional losses. For example, if 4 weeks out, when DCL keeps only a portion of your money, you realize you can't make the trip, but wait until the day before (when DCL keeps all your money) to canel the trip, the insurance is not going to reimburse you the full cost of the trip.
Beyond that, I don't know if the insurance DCL sells is good to you or one of those PIA insurance companies that won't pay a dime if you forgot to dot an 'i' or cross a 't'.