Would I go fully nude? Yeah, I imagine so. I've been to clothing optional places before, but they were more kink-centric. I am not that big on beaches or swimming, so nude beach isn't too high on my list of places to visit.
I don't tend to be shitty and judge people's bodies. I find scars and such interesting. It would be hypocritical as fuck for me to judge people who have a bit of body fat, since I got a bit of chub. Wrinkles and such, we're all going to age. I may notice if someone has features outside of what I'm used to seeing, but not in a negative way. I saw a woman the other day who I'm guessing was pushing 6'6 given my partner is just shy of 6'4, and my thought was along the lines of "dang, that's a tall lady".
I don't generally tend to ogle, but I'm with a male so I would probably note attractive women more than men.