Tucked behind walls of green ivy is a summertime treasure. Only a yellow umbrella and bouncer give away hints of what lies inside -- a private members-only dayclub for those 21 and up that once catered exclusively to VIPs and the social media elite. Vesper Dayclub in Philadelphia offered the kind of pool experience you see in Hollywood movies. It is all about the exclusivity, the party and the VIP. Private bungalows, rentable day beds and champagne bottle service.