Thanks Jen. That's helpful info.
Even if covid wasn't a consideration, they would be mostly uninterested in the indoor group activities anyways (trivia, cards, casino). My dad would enjoy the indoor live music and bars, but guessing my mom would skip that, and be happy when there is live music outdoors, which seems to happen at least several nights on the pool deck. Do you know if there are musicians in outdoor bars (patio bar, sky bar) or other outdoor areas most days?
Guessing mom would skip afternoon tea, and most indoor dining options, though she might get more comfortable as the cruise goes on and they see that many indoor areas don't have that many people in them, if you avoid times when they are popular (observation lounge and main dining room seem to be very popular in the evenings for example).