Infinite Wedding is an adaptation of apparently the last few updated chapters of the light novel.
The music, openings, etc. are really, really enjoyable;the chorus and instruments fit so well together.
The biggest problem I have and I think many other fans of this series has is the character development and latter.
These characters are created greatly, Houki, Charlotte, Laura etc. All of these heroine's have essential ground to create lots of story content, but it never, ever happens.
This OVA is cute, it has great music, and I've always personally loved the art, and animation that Infinite Stratos has offered.
If you took nothing from this review, just know
this. You will get lots of squabble and no progression in this adaptation.
I still await patiently for Izuru to write more exciting plot rather then changing the personality of every character every time something is released. This series has so much potential, but yet I still find the potential in FanFiction more then the original work.
This OVA is available through the blu-ray special edition. You can find it online, but you'd have to traverse forums. I'd just buy it;if you really want the official squabble.
Final Verdict - Fantastic music, good animation, it is overall very cute/funny. Other then that, it is bland, it has squabble and no plot, makes itself out to be cannon fodder for merchandise.
I'll stick with fan works. ;)