> Considered that, but didn't want to revisit this if/when there are two in the same city in the same year. 

Well, we'll have to revisit anyway as the urls are based on this assumption. I really want to avoid having to deal with two id systems here. Ideally, we'd also not need to list the events in the config file at all, but just find them from the files (like the blog posts).

I don't want to make this a blocker, but I'd also like to watch out not to acquire too much technical debt.