In our case, there are, and will be, a bunch of sex acts that don't have a relevance in canon. simply put, they may happen or not, but they have 0 weight on the social interactions between the parties involved (or those that "got them involved")...
there are of course also paths where relationships may evolve towards more meaningful sexual experiences.. but overall, the story is not driven by sex and doesn't revolve around sex. sex is just part of the context.
in the case of Ain or Emilia bringing more than tea to the guests under direction of the master of the house, is just good manners/hospitality. (I'm personally more annoyed that Z didn't show us the amazing dessert the MC has been bragging about).
it won't have any ramification, so the canonical relevance is nil.
as for tags on f95,.. we aren't really bothered by just how accurate they might be.. we're open for discussion on the discord, as usual.