What is the norm on your house?
We're a open and play house. Get it out of the packaging etc. have a good look/little play and when ready open the next. This is mostly because my DD5 can't handle any kind of "chaotic" present opening. This also helps me, so I can write down the sender and gift for later when DD sends.a video thank you or writes a letter of thanks 😅 but downside is, can take FOREVER and we all get a bit bored, so spread out, do some after dinner, some on boxing day etc.
Completely different at my sister's, they open everything up, have a little glance, place it in a pile and go for the next one.
Other sister...they have a mad scramble to open everything as fast as possible. She has 3 kids, and they love having a mound of wrapping paper and rummaging back through it for presents etc. I have no idea how, but sister knows who got what present and who gave it to them 😂
The kids play with the toys later on and I've the next few days.
Nobody I know does "one person opens, everyone watches".
No judgement here, just curious.