The pop superstar and three-time NFL Super Bowl champion, both 36, tied the knot on Friday at the storied Madison Square Garden under heavy security, with the 1,000 or so attendees reportedly required to sign non-disclosure agreements.The singer's publicist Tree Paine confirmed the marriage took place in a short statement, and gave a few details, such as the couple's choice of ensembles from Christian Dior, shoes from Christian Louboutin and Cartier jewelry.But nuggets of information surfaced on Saturday, starting with the anchors of ABC's "Good Morning America" news broadcast -- Robin Roberts, George Stephanopoulos and retired NFL legend Michael Strahan -- describing their experience at the party.Stephanopoulos, a onetime aide to president Bill Clinton who pivoted to journalism more than two decades ago, said the ceremony was "as intimate as it could possibly be, given that it was Madison Square Garden" -- the iconic sports arena.He said the A-list couple had created "this garden inside the Garden that was just so beautiful.""It's hard to imagine that a place that big and a wedding with such stars could feel so personal and so intimate," Stephanopoulos added.Roberts said the couple "wrote their own vows," and Stephanopoulos talked about Swift and Kelce having "little books" with them, as comedian Adam Sandler officiated. "They had their neighbors, their high school friends. It was like any wedding that you would attend," said Roberts, who also confirmed that Nicks performed as expected.'Incredible'It was like "any wedding" -- except it featured a who's who of the entertainment and sports worlds, from Swift pals Selena Gomez, Ed Sheeran and model Gigi Hadid to actors Hugh Grant and Bradley Cooper. Kelce's teammates and coach Andy Reid were invited, as was NFL legend Tom Brady.