Here’s an example of an event created using the previous shortcut (just excluding the map link to illustrate it isn’t that data that Fantastical uses). As long as the address is populated meaningfully, a map should be embedded in the calendar. Tapping on the curved arrow after the address will also open into the mapping app specified in the Fantastical settings.
If that doesn’t cover your issue, can you explain specifically what you haven’t yet been able to work out?