Good sweet 16 banquet halls??

Use a community building. When you need to plan a cheap party, think of alternative places to hold the party. Many ideas would work perfectly and save money at the same time. The community buildings at a park are usually pretty cheap. If it is a summer month, you could even just rent one of the shelters at the park and have your celebration under the stars. Also, contact your local church. If they have a fellowship hall you might have a opportunity to save alot of money.