The shroud of secrecy surrounding Chelsea Clinton's wedding here was due in part to the wedding planner, not the Clintons. Bryan Rafanelli, a Boston-based event planner who managed the Clinton weekend wedding extravaganza, said in an interview on Sunday that he required confidentiality agreements with his vendors. 'This is how I run my business, protecting the privacy of my clients,' Rafanelli said, chatting at the Beekman Arms, the stately inn that was a focal point of the weekend before the Saturday night ceremony at the Astor Courts estate on the Hudson River. He said that while he put a lid on the nearly two dozen vendors involved, there was no similar lockdown on the 450 guests. Guests, he said, simply understood that the Clintons would not be happy if they blabbed publicly. In the spirit of nondisclosure, Rafanelli declined to reveal certain details himself -- like how much the wedding cost. 'I know Chelsea and Marc wanted to have the highest quality,' he said, referring to the bridegroom, Marc Mezvinsky. 'That doesn't mean the most expensive; it just means really a beautiful wedding.' Rafanelli laughed when told the rumored price of the invitations was $150 each ('absolutely not') and the bank of high-end toilets was $15,000, which he said was not true either but admitted that they were 'appropriate to an event at a Stanford White-designed structure' like Astor Courts. He did not disclose any quarrels in the decision-making. 'This was Chelsea and Marc's wedding,' he said. 'And this is the wedding her parents wanted her to have.' Rafanelli, 48, knows well what the Clintons expect in terms of taste and discretion -- and how to keep a low profile in a high-profile undertaking. He has known Hillary Rodham Clinton, the secretary of state and mother of the bride, for a decade, first meeting her through Elaine Schuster, a client and Democratic fundraiser in Boston. He planned a fundraiser for Clinton in Boston in 2000, when she first ran for the Senate in New York. For Chelsea Clinton's wedding, the family entrusted quite a few details to Rafanelli, who began his planning in December. He said the couple wanted to be married in New York. Rafanelli offered them three possibilities, and they picked Astor Courts because it could accommodate an outdoor ceremony and met various security and privacy requirements. The ceremony was set for 6 p.m., and Rafanelli said the Clintons were 'pretty close' to being on time -- a rare occurrence for many bridal parties but especially for the former president, who runs on 'Clinton time,' which is chronically late. 