I see that, per the Cunard website, health insurance is required: All guests are required to have comprehensive cruise-specific travel insurance in order to sail with us. You will be asked to confirm that you have travel insurance at the terminal and may be required to show your insurance documents as proof of your policy. Unfortunately, you will be denied boarding, at your own expense, if you do not arrange insurance. Does this apply to US travelers, and, if so, exactly what type of i