My grandson was chosen for this.
First, Merlin chose a big, muscular man from the crowd and had him try to remove the sword. When he couldn't remove the sword, Merlin then chose a child (my grandson).
After Justin removed the sword, Merlin placed a robe around his shoulders and put a crown on his head and had him walk around the stage (with the man holding his robe up off the ground) and wave, acknowledging the applause of the crowd.
He was given a metal medallion (on a ribbon, to wear around his neck) that read "Ruler of the Realm". He was also given a certificate proclaiming him "Ruler of the Realm" for a day.
He was so proud of his medallion that he wore it the rest of the week. He was really thrilled when other cast members noticed his medallion and referred to him as the king or ruler.
There was no front of the line pass, though. Didn't matter--he was thrilled.
6 yrs later (he is now 11), the certificate (we framed it) still hangs on his bedroom wall.