Writing "Dave" on the cup has the same effect as writing "Hoss" as far as getting a bonus point. But the ability to get that CG assumes you didn't get any bonus from the coffee cup.
I know you literally just said it doesn’t matter as far as seeing new content, but you bonus points for putting someone else’s name? Just asking cause I was planning on replaying soon and I like little stuff like that🐊
Putting in any of the main cast names gives you a point of affection with them plus some tweaked dialogue. Putting in Dave's name gives you a point for everyone. A couple patrons also have their names in code but they don't add any bonus points.