walk down the aisle
To get married. I still can't believe that Nora and Scott walked down the aisle—I never thought I'd see those two get married!
go/walk down the ˈaisle
(informal) get married: I never thought you’d be the first one to walk down the aisle — you used to say you’d never marry!The aisle is the passage down the middle of a church between the two blocks of seats.