is going to be similar to any
trip insurance you can purchase. If you think that there is a chance you are going to have to cancel and you will be out a substantial amount of money, then you might want to consider it.
With Disney, you might lose the equivalent of 1 night's deposit. If you have airfare, then you would have to take a credit and incur whatever the airline charges you to change to another date. If you are seriously considering it, you might want to check out
www.insuremytrip.com, which is an independent seller of various trip insurance policies. You can customize to the one that works best for you.
If you are cruising and you pay in full with no refund, then it's a decent option, especially if you are travelling when there might be a problem with your flight and you could potentially miss the ship, or you will be in a foreign port and heaven forbid someone gets sick and needs to be airlifted out. If you are just staying in FL, then it might not be necessary.
We took it one year when travelling w/ my mom. She is older and has had 2 knee replacements so we wanted to be sure that if something happened and we had to cancel or have her brought home, we could. But sometimes, the cost of the policy and the amount you might lose are very close and there is no incentive.