I have seen that the first thing that happens when arriving at the first town is that the MC goes to what is basically a brothel (they don't use that word, but in my opinion it's). It's not something I'm excited about, I would have preferred not to have any scenes with prostitutes, but I feel like I have no other option. I hope at least that the prostitutes aren't LIs, or that if they are we can ignore them from this moment on.
I see. That's something we missed. It should be in the Oter Haven's Quests.
It doesn't affect the main quests. It only affects the brothel-related elements.
Answer: You can safely skip the Succubi and not affect the other storylines. One unreleased side character might be impacted, but now that we know there might be players like you, we'll work around it.