When hiring the band, be sure to tell them that it is a formal. This may change their appearance and the type of music they play.
Prices are sometimes higher for a formal.
Be sure to have a written agreement with the hotel or establishment where you are holding the formal. Unseen costs can often occur that may greatly increase the price originally quoted. Check these things out before you rent a place and make sure to find something within your budget and which will suit your needs. Depending on your preferences, you may want to provide your own food and non-alcoholic drinks or have these provided for you. Check out these possibilities and costs.