The author tends to add side stories. I think the wedding will be added at some point, probably the next one? Since we know things from other characters about it.
Not sure about that. It says completed. And it only included 3 side stories.
The author wanted to add another one in the near future, she released a schedule a few months ago, for this and next year. Which included side stories for KMIYC, DMIYC, KML, KTS and RoS + 4? novels. But she got sick? So the novel that was next was pushed back from July to Oktober, it's now in progress, probably will take ~2 months till finished, could be less. Side stories will be released between novels.
I only know that, because I'm waiting for the second side story if DMIYC.
And as I mentioned, a few things are known, for example what Dane did at the wedding and what he thought of it.lol So I think we'll get a side story with the wedding at some point.
So disappointed there was no wedding scene!! Goddamn not even a pure sweet family bonding, the amusement park scene ended in disaster