The following are a few of the most important things to inquire when hiring services about before hiring a wedding DJ:
Price: What is you estimated costs? Do you work with a team? Do you have overtime hours?
Music: Why type of music do you specialize in? What types of music do you have?
Attire: Will you dress professional? Ask your DJ, at minimum to dress in all black or professional business attire.
Experience: How long have you been performing this service? Ask for references.
Contract: Be sure to document every request within the contract. Include the set up time, arrival, pay times, end times and tear down. Don't assume.