A salient point with regards to future votes, but perhaps not in the regard that you're thinking.
... Well, I'll take what I can get.
If we want to keep Ulyssian's friends - and I'd argue that that's a good idea, long-term - we're going to need to talk to them at some point, so we can either do it now or later.
Talking to them
later means we get a +xp action
now, but potentially at the cost of a +xp action
later, so I'm not willing to call that either way. There is
accelerated training time, which is important if we're about to be thrown into a fight but which we've actually got a surplus of otherwise, and guaranteed presence when Moon wakes up. Also, several hours of recovered memories from Odyssial, which might be the biggest point; that'll open up paths to recovering bits of legacy, and some of those are going to be more than just personal power.
On the other hand, Wild Revelry means we answer questions with Nilul present for cover, and with her help putting together a story, whereas if we put it off we're more likely to be stuck depending on Ulyssian's own social abilities whenever we're finally cornered. That's an advantage right there, which we might want to leverage if we're not planning on severing friendships. Also, we might get better relations with House Sesus as a bonus, and that could be useful; long-term in stabilizing/rebuilding the Realm, short-term in the form of fewer honor duels or other problems from their direction.
It also means risking public intoxication, but I don't think that's likely to actually end in disaster, given Ulyssian's stamina and resistance.
... Lastly, if we're not going to have the option to be around and openly supportive of Moon in the upcoming months, we might want to make quiet arrangements for some of our friends to be doing that for us. Having Nilul arrange
that might be a more useful use of her abilities than just buying time and putting off questions a little bit longer. That said, we might be able to get that from either vote.
I suppose bringing friends along on ventures to recover legacy artifacts or whatever pulled from our memories from Raw Power would be the best result (though it still dumps our relationship with House Sesus), but I wouldn't want to assume that's going to be available.