etiquette for firstlooks

I'm not aware of a specific etiquette. I would suggest doing the first look with your son first, then your fiance, since then you could then transition right into doing the pictures of just you and your fiance immediately after the first look, and then pictures of you, your fiance, and your son right after that. Maybe check with your photographer too about this one, they may have a suggestion on what might work best for timing.

There is no etiquette involved. Do what works for you. Make sure your photographer is aware

I don’t think there’s a specific etiquette either

First looks are extremely new. There is no etiquette.

There's no particular etiquette on this, just your personal preference and whatever works best logistically!

Most brides who also chose to do a first look with their parents do that one first so they can also take a few family photos together before going off for the more private first look with their soon-to-be-spouse!

No etiquette. Work with your photographer on location and logistics. No one other than my Mom had seen my dress, so I did a reveal/first look for my husband, my Dad and my bridesmaids. It was best logistics-wise in my case to actually do it in the reverse order, reveal to bridesmaids (and Moms since that’s where they were waiting) in the bridal suite first. Then bridesmaids leave suite and Dad enters for his reveal. Then a longer first look with Husband in the more photogenic/romantic area. 😊