What do you know about priority seating at the Fantasmic show in DISNEYLAND, CALIFORNIA?

I just purchased priority tickets for The Disneyland Fantasmic show. I have never seen it even though I have been to Disneyland a bunch of times and have a premium passport.
I was wondering if anyone had any tips about getting there early to “choose” our seats and which seats we should “choose?” The girl who took the reservation said that they are all at the water’s edge, but really wouldn’t give me any tips, as much as I tried. She said we choose our seats at 8:00, but couldn’t give me any idea how many people I will encounter at that time or if I should really be there at 7:00 or anything. Any advice would be appreciated. I will have my 2 year old grandson with me.