At least for Japan, catching covid on land should be minimal concern. I was in Japan for 3 weeks last Nov/Dec. I felt rather safe. Masks were required indoors and on public transport. You would stick out if you don't wear a mask even outdoors. When you approached the buffet food station, mask was required and often gloves (great idea) as well. Hand sanitizer everywhere and temperature checker commonplace. High touch areas were routinely disinfected. I reckoned the Uber ride home from airport probably exposed me to much higher risk.
A downside is that wearing a mask all day long can be very comfortable, especially so when it is hot. Don't underestimate that if you already have some respiratory issue to begin with.
My bigger concern is the cruise experience. Even before covid, the effects of cost cutting were obvious. I am taking this next cruise with low expectation, and I won't be surprised if I don't want to do another one again. It simply is not as fun as it used to be. HAL cruises used to be great value for money. That is also coming into question. Still, I'd rather they raise price than lowering quality. Just too depressing to see each cruise worse than the one before.
