1) Make weight during the weigh in time.
2) Show up at the tournment.
3) Collect medal(s) and go home.

My youngest had this situation last year. We tried to get some exhibition matches but the tournament was too tight to allow time for those. A vote by the board sealed the fate. A majority voted to keep age and weight classes intact. No combining. Personally I would like to see Madison Block wrestling with four or five man round robins.