They walk around the left side of the long table, then back outside again. Then back inside.
The bride has her head down, during the entire following ceremony she doesn't raise her head once. (I was told that was to demonstrate her humility, but it did get in the way of photography!). I have only a few photos of her during the wedding where she looks into the camera, some stiffly posed family group shots, and a few before the wedding, during the interview with Keuy.
The other exception was when she walked past me during the rounds of offering drinks to the guests around the table, she was looking down, and I called out "Hey Jao Sao, bung nee" (Hey, Bride, look here). She forgot her role of downcast humble, looked at me, small smile, then looked away again.
A documentary photographer shouldn't really interfere with the process they're documenting....