On the night you would have embarked, you guys need to do something special, unique - together - to make a memory - make lemonade out of lemons! Maybe a Disney movie night with a special dinner - all of your favorite foods - or some dishes close to what they would have served in the main dining room? Maybe have your own pirate night?
I have a Dad home who's 89 (with cardiovascular issues) - pretty much is keeping to the house, because the poor guy fell & broke a bone in his back (he's recovering) - I am petrified that I will unknowingly bring that damn coronavirus into the house. Needless to say, I am washing my hands 8 million times - as well as - sanitizing all surfaces and door knobs. I am flying to Orlando this Saturday to visit a family member quite ill with cancer - and I have a fear that I will catch it during that trip. Ugh.
So it makes me happy to read that you're being cautious.