Dinner was served near the monkey habitat, in a tent decorated by Renny, the Manhattan floral designer.
"The earth will be sprouting gardens, the tent decorated like a spring garden," said Susan Morrison, who with Dottie Shreve is chairwoman of the show.
She also served 3,000 breakfasts, from a white tent decorated with autumn leaves, outside the stern, pedimented facade of the New York Stock Exchange.
On Monday, a Western-dress hoedown was held in Southampton under a series of tents decorated by Macy's with bales of hay, hurricane lamps and sunflowers.
Several hundred Orangemen camped out overnight in Drumcree, sleeping in tents decorated with Union Jacks and vowing to stay until they received permission for their march.
Under a tent decorated like a cruise ship, guests dined and danced at Southampton's largest summer benefit, Aug 7.
The reception was held at the Round Hill Club in several rooms and in a billowy outdoor tent decorated with Venetian chandeliers and towering flower arrangements.
Guests were seated at 160 tables on the hospital lawn under a 30-pole white tent decorated with blue hydrangeas and white impatiens.
During the reception, under a tent decorated with pink-, ocher- and orange-mirrored Moroccan-style materials, she gave a long toast to Mr. Shaw before 300 guests.
His name is inscribed at the base of the tent decorated with reliefs showing pomegranates.