New Delhi, July 3 -- Madison Square Garden typically holds 20,000 Taylor Swift fans. Tonight it holds fewer than 1,000, and every one of them has signed a nondisclosure agreement.

30 p.m. Eastern Time, according to a New York Police Department memo reviewed by The Hollywood Reporter. The rehearsal dinner took place Wednesday night. The reception runs through 2 a.m. The logistics of converting an 850,000-square-foot sports and entertainment venue into the most private wedding in recent memory have been described in the memo in extraordinary detail.

Guests will arrive for a cocktail hour on the sixth floor beginning at 4 p.m. before moving to the ceremony. The event carries a minimum expected cost of $20 million and is expected to accommo...