Have trash bags available, along with brooms, dust pans and wash cloths so that you are prepared to leave the building in good condition. Another responsibility that this committee may want to take on is that of the welcoming committee. It would then be up to them to collect tickets and let everyone know of any assigned seating arrangements. The cubmaster and a selected master of ceremonies should be a part of this committee. This may or may not be the same person.
Some packs like to give their cubmaster the night off to just sit back and enjoy the festivities.
They need to plan the format for the evening and have someone be in charge of each item on the agenda. Arrange for the entertainment. Be sure to always keep your time element in mind. You may want-to have some time of outside entertainment, or just have each den prepare a skit, song or demonstration. Regardless, each den should in some way participate in the evening's events.