Summer on Wall Street means a chance for bankers to board that private jet or first class seat to blow off some steam -- and where else to go but some of the hottest international destinations, where partying is big business. Sardinia, Italy is synonymous with the party scene, being dubbed "the playground of the rich." Wall Streeters looking to dance the night away to the world's hottest DJs head straight to the island of Ibiza. Greek island Mykonos is renowned as much for its beauty and splendor as it is for its wild beach parties. And, in the In the last couple of years, Croatia's Hvar Island has climbed up the radars of partygoers and Wall Streeters alike.