Paulbot: they should still screen it in English with subtitles -- I recommend you watch it in a local cinema. Hopefully the subtitles will be inside the black "letterbox" beneath the image so that it doesn't actually obscure any of the visuals (and makes the print easier to read anyway). Depends on whether or not they want to write the subtitles horizontally or vertically - if it's vertical then that might partially obscure one side of the screen. Maybe inquire with some people living there as to how subtitles are usually printed on foreign movies in that region. I'll be in a non-English speaking country when Thor comes out, so I'll let you know how the subs were positioned.

I've lost count of the number of times I've watched TF and ROTF on DVD. But as far as cinemas are concerned:
Transformers: x3 - once at the Fox Studios premiere, once at the Sydney movie meet, once with the wife
Revenge of the Fallen: x3 - once at the IMAX premiere, once at Reading Cinema with dirge, once at the drive-in with the wife and bub