I've been lucky enough to shoot weddings in a number of foreign countries over the years.
Foreign weddings work in the exact same way they do on home soil. I get to the venue a couple of days before the wedding, carry out a recce and meet up with the Bride and Groom one last time. All of the small details, like car hire for example are sorted out well in advance.
I've travelled as far as Australia to shoot weddings. Distance isn't a problem.
As I love travelling foreign weddings don't really cost much more than local ones. It's just a great excuse to get myself in the sun for a week or two...and call it work! Feel free to enquire.