If you're assigned window seats and you really want to ask someone to swap then I'd suggest 7E&F as they'll both be strangers flying sat together. Unless of course 7E is Gold and relying on Theoretical Seating or has a particular fondness for a middle seat. As someone up thread said, if you do ask then be prepared for a polite "no" and I'd advise against saying you're on your honeymoon.

Or if you're really wanting to be close together for the overnight flight you could offer to swap with someone in WTP. I jest of course. But the big draw of CW is that you'll both be able to have a good sleep and be refreshed for your SA adventure. Have a great honeymoon.