Hm, the MM entry doesn't say anything about the specific conditions a vampire is subject to when resting (only that they must rest during the day). Without further elaboration in the vampire entry, I guess the assumption is that "resting" equals sleeping (as opposed to being in some sort of...
OK, I'm gearing up to run Curse of Strahd, and ran into a general question on how the Stake to the Heart feature works.
Both the vampire and vampire spawn have regeneration, and both have the Stake to the Heart weakness (when the specifically-worded condition of "a piercing weapon made of wood...
Why not "DMGL" (contrasts nicely with "OGL")?
BTW, what's the skinny on releasing software products, such as a character tracker? Is this dealt with specifically anywhere?