I take a Calcium/Vitamin D every day. My husband takes a D3. In Scotland we rarely have to worry about getting too much sun. But we spend 3 months in Thailand in the winter and there is plenty of sun! We use sunscreen and always wear a hat. However, over that amount of time we do gradually get a tan which does mean it takes a lot longer to get a sunburn. By the beginning of the third month I usually just put sunscreen on my shoulders, forearms and nose. We never, ever lay on a beach trying to get a tan. But we walk, ride our bikes a lot, paddle a kayak, and that means sun exposure.
It is humid there, but we do get sea breezes. We try to stay out of the sun midday but since we have lunch and dinner out every day, we have to go out.
We always keep an eye on moles and spots to see if any change. There are no routine checks for spots at a dermatolist in Scotland because it's.....well...Scotland which is known for drizzle and clouds.