Taylor Swift and Travis Kelce are paying retail for their wedding event at Madison Square Garden, and that full price is well into the millions ... TMZ has learned. Sources tell us the soon-to-be-weds rented out MSG for at least 3 days ... one day early for set up, the day of the event, and the day after to strike it all. An industry insider tells TMZ ... booking MSG will set ya back about $1 million per night, and our sources say Taylor did not get a special deal on the "World's Most Famous