If my companion cancels, do I have to cancel?

Answer:

Depending on the CSA Plan purchased, if your companion cancels for a covered reason, you may be able to cancel as well. If you decide to continue with your travel plans, you may be eligible to receive a Single Supplement, used to cover additional charges applied by the supplier when facilities are booked for one traveler, such as cruise lines and tours.

In each case, a CSA Travel Protection Plan must cover both you and your companion. If a CSA Plan does not cover your companion, then you may not be eligible for the Single Supplement or reimbursement for cancellation.