I guess we are pretty much all on the same spot.
Cargo shorts etc are fine (and they offer the opportunity to handle all those little things you would put in your jacket in winter). Another issue are what europeans usually wear on the beach - it seems most us people think that what you call speedos are gay. Hm, I don't think so, but I found those a bit wider shorts more comfy, too.
Sandals are really nice in summer, and way better than going barefeet - or walking around in sweaty sneakers creating feet smell like a punch to the face
But I propose that guys who want to wear those sandals get a pedicure first, it is absolutely okay for men today to get that.