Can you copy location metadata from one photo to another in iPhoto?
Yes, it's very simple.


Select the photo you want to copy the location data from and hit CMD+C to copy
Right click the photo you wish to paste the location
Select 'Paste Location' from the contextual menu.


Also you can check out http://thedigitalstory.com/2009/04/copy_and_paste_geoda.html for a pictorial guide.