So, what’s going on?
In my third choice universe, during Starlight’s unexpected ascension, Princess Luna was introduced to Revelation Coffee’s Luna’s Hate coffee, a highly caffeinated brew. Calling the owner before her, to his surprise, she didn’t admonish him for the product, but complimented him on it, although she suggested the name Luna’s Lament. And asked if they could make something stronger. While something stronger could be made, but it’d have dangerous levels of caffeine, so they agreed it should only be released for a short time, and thus the fall brew of Nightmare’s Bane was born.
Every year, Luna dons her costume, and does one ad for them. This is the one that created her fandom, a cheesy take on the typical vampony ad, with a pot of coffee affecting her much like a holy object affects the vampony.