I am getting married in August in Indianapolis and I am hiring a DJ for 4 1/2 hours, but I don't know when he should start playing music? I don't want loud music while my guest are eating. What should I do? Do I tell him that? I'm having a catholic mass at 2:00pm and after that I am telling the guest to go to the reception hall. My reception will be from 6-10? should I have them set up diner right away? So lost, please help!