The Legion of Honor is actually an art museum, though I'd never thought of it as more than a good background for engagements and wedding photography. There's actually some famous artwork behind those marble walls. It's a great background because it's monotone, but not boring because of the architecture. It thus provides an interesting but not distracting background.
Have you been to a small wedding? Where there is no aisle? But rather, just a gathering of people, a small crescent shaped standing crowd facing the bride and groom. This makes taking photos incredibly difficult. I can't shoot straight on - I am edged to the flanks of either side of the crescent, and can't get a photo of both bride and groom faces at once. This is where it would be useful to be really tall, or really impudent (is that the right word here?) - and stand in front of the crowd of people for the Best view. I am neither, so I just did what I could.
I was given ample time to take couple photos after the very very quick ceremony, so that made me happy.