The title-winning Pilgrims entertain Mansfield Town Brooksby (kick-off 2.00pm) with FREE entry for all to the Mick George Stand.
United president John Blackwell will present the Pilgrims' medals on behalf of the National League at full-time.
The Pilgrims will subsequently be back in action in the play-offs on Wednesday May 10, travelling to either Maidstone United Ambers or Hastings United.