What do you need to do to prepare modding a panel? That sounds really interesting!
Also, yay dSSS!
The con I went to went on for several days, but I only spent one day there and went back very very late at night by train. I still remember goofing around on the platform in the very early morning with my friends. And (at least I think so) the stay-over cons aren‘t really a thing here in Europe? Idk but isn‘t it the case that in the US the organizers sort of arrange accomodation too? Here I think everyone chooses their own place to stay, but someone please correct me if I‘m wrong.