mwf113

Why don’t you create a multisite installation for the event and each city would be its own installation? You could use an event plugin similar to:
https://wp-events-plugin.com/documentation/multisite/.

Also, check out https://themeloom.com/ which offers an event custom post type of most of their themes.

fpmortimore – not sure what you are looking for…but I highly recommend Suco by Themify. I used them for my event (https://thesociallaunch.com) and even posted a video on how easy the theme is to use for an event (https://wpeventsites.com/creating-an-event-website/).