it'll be all right on the night

it'll be all right on the night

Some event or activity will ultimately be successful or adequate once it has begun, especially despite difficulties before it. A: "Three more people said they can't come on Saturday. This party is going to be a disaster!" B: "Don't worry, sweetie, it'll be all right on the night." He keeps saying it will be all right on the night, but he hasn't done any studying for this exam yet!
See also: all, night, on, right
Farlex Dictionary of Idioms.

it’ll be all ˌright on the ˈnight

(saying) used to say that a performance, an event, etc. will be successful even if the preparations for it have not gone well
See also: all, night, on, right
Farlex Partner Idioms Dictionary
See also:
  • all right on the night
  • cards are stacked against
  • wear well
  • pass in a crowd
  • not out of the wood
  • not out of the woods
  • go far
  • pass muster
  • pass muster, to
  • The good is the enemy of the best
References in periodicals archive
That time was pre-1977, but everything changed in September of that year when veteran scriptwriter Denis Norden presented a show called It'll Be All Right on the Night. Griff Rhys Jones, above, is now in charge and presents another selection of delightful on-screen disasters.
WEDNESDAY
Should hope it'll be all right on the night or should I get help?A I THINK your fiancA is probably right.
Just Joan : Reader's letter