Just got this figured out, myself, so I thought I’d share. There are a couple DIFFERENT search fields that show up…one by name, etc. and the other by zip. The search=false turns off the first one and radius=false turns off the search by zipcode. Yay! I finally know enough to help (I hope, anyway).
Just thought I’d mention that I also tried to turn off address in the text of the google baloon display, using EM>Settings>Format/Layout>Maps and Geotagging (deleting address placeholder). This wouldn’t be the best workaround anyway, because it would turn it off for every event location, when I only want it for one. At any rate – it didn’t work. Address still shows on the balloon on Google map on the Event page.