How to get event node to pull in data from a seperate node?
As I understood from you question you want to know the best way to display some information from the location inside the event node view page, if this the case you might need to create a  block view (from views module) takes the reference node location (nid) in the current node event being viewed, and as you have the view you can display all the information needed.

I hope this will help.