It's weird, how this is one of the most...restful...technically-not-Sovvan that Vanyel has ever experienced. Nobody is expecting him to do anything or annoyed that he can't do things or having extra feelings about his feelings that he has to comfort them about.
He does end up mentioning to Maitimo that for the several years before his journey to Urtho's Tower, due to the fact that Sovvan is also a major seasonal festival in Valdemar, he usually had to spend it in political meetings. This requires also explaining that King Randale, as part of the alliance they formed with Karse when they ended the war, is in a state marriage with Queen Karis of the neighbouring country and has a child with her. (Marriages and children are a not-uncommon way to resolve tensions between nations in his world, he explains.) This is awkward because of the part where Randi is lifebonded to Shavri, but Karis doesn't seem to mind at all, he suspects she's relieved that her marriage doesn't involve any of the, well, usual intimacies in such a relationship. It probably seems pretty weird and offensive to Quendi, though, given how their marriages work, and since Karis is presumably going to make it to visit Arda at some point, they should figure out how to present it.
(Vanyel does not mention that he's actually the biological father of said child, or the very awkward evening together that making this happen required.)