(Editor’s note: Originally published in June 2015, this Kirshenbaum classic captures a particular Hamptons summer in all its excess. Some venues and prices have changed since publication.) It was a difficult winter for tous New York: even the 1-percenters who spend fewer than the allotted 183 days in the city. Summer is here and while for many that means BBQs and cut-off shorts, for the uptown elite, the joy of breaking out the new Hermès cherch…