Insurance - I wish it could be simple.
Actually Karen has a point because "bankruptcy" is covered with travelex ONLY if the policy is bought within 21 days of deposit. Most of the insurance policies will have this clause I believe. Radisson's carrier Berkely Care does not cover bankruptcy at any time no matter when you buy it.
Credit cards are the normal coverage for bankruptcy anyway not travel insurance companies.
I am not an expert on this subject at all and I am sure that different cards have different policies. I had a cruise to the Galapagos booked for about 8 months. They went bankrupt. We still got our money from the credit card company because we had not had the "product" yet so the 2 month rule did not apply. Airline tickets could be the same thing.
Also dont some of the other airlines honor certain tickets - PETER he is the one to answer this question. Air is not my bag.
You must insure everything you get from Radisson for instance but if you buy the air elsewhere you do not have to insure that at all. You can chose to insure or not. If you buy the air from Radisson then you must insure it.
With that in mind you may be able to insure your air elsewhere without the cruise portion I am just not sure if the "whole" vacation must be with one carrier. That has never come up before.
I believe there are lots of loopholes when you are looking at a company that everyone clearly knows is heading to bankruptcy. I just dont know all the details here at all. Kind of out of my realm of expertise I am not better qualified here than anyone else.