I'm not sure if it's still called an altar if you arent getting married in a church, but whatever its called I think we need one.
Because there is nothing really special behind us where we say our vows..
For a while there I was thinking we needed a full blown backdrop.
But now I've changed my mind, there isn't a need to block anything out, maybe just close the expansive space in a little, bring the focus to where we will be standing
Something like these:
Or here is another option along the same lines..
Its sort of simple and rustic, not too obstructive and would be fairly easy to put together...