what does the celebration of release celebrate in the book the giver?

Really it is an expulsion of people deemed too old or useless to the community. A celebration of release entails the telling of his life, a toast, the chanting of the anthem, his good-bye speech, and a few more speeches. Afterward, the excited person bows and walks into the Releasing Room. No one but the committee knows what occurs in the Releasing Room, and children are not allowed to attend. I think they are basically exiled from the community and left to die.