A little clarification

It seems to be something of an odd divergence in the various views of how vampires spend their day.

A couple of things, so long as there is no sunlight around a vampire can wander about during the day just fine, so indoors away from windows = good. There is no instant comatose or anything when the sun comes up. They do have to sleep though and that generally makes sense during the day.

Walking in sunlight = burning from the inside out. It starts to effect a vampire immediately in any place that is exposed, eyes for instance are particularly sensitive. A vampire might be able to walk about with a heavy blanket draped fully over their head but this isn't very practical.

Older vampires (1000+ and such) could make it from a building to a car with UV protected glass without showing too much distress, their body would heal the damage reasonably soon once they were out of the sun. That is still very short, they will start smoldering, it will be painful.

The blood is flammable and the skin only seems to offer so much protection. (read that as not much at all.)

Just wanted to clarify.