Most often the band is able to perform for additional time. Consult your contract for the exact rate. Payment needs to to be sent in advance of the wedding or given directly to the bandleader in the form of cash at the wedding. Overtime availability of your artist should be determined prior to your event. The overtime rate on your contract is not a pro-rated band rate based on the full band cost.
*Tip: It is best to let the band know your intentions of overtime as early as you can. This will help the band pace the dance sets and not perform a “big finish” too early.