If you booked your cruise through a TA, give them a call and have them cross-reference your bookings. They should be able to arrange for a table for 6 for you. If you booked directly, you might give the cruise line a call and see if they can help. If not, go to the maitre d' once you're on board, they should be able to accomodate your request.
Gary, you're right that your friends need to get away from their problems, even for a little while. They've had some rough breaks. I wish them the best.
Thanks for the kind words. I will keep you posted. He goes back to the VA hospital today. Right now he is taking flomax and cipro. I would think if he has an infection, those should take care of it.
All I can add to this is it's great on Princess to have anytime seating. We can choose a table for 2 and if we run across people we click with we can arrange to dine together.
We've dined with all sorts over the years - the good, the bad & the stuck up.