From the initial enquiry, either by email or phone I will take down some details. I will tell them that everything I have gone over with them will be put into an email and I will send a confirmed quotation. In that quotation will be a breakdown of what they get for their money (For example)... A Disco Duration of 4hrs - 4.5hrs, A full sound & lighting system, A full back up system (to avoid any disruptions to their evening), Early access and set up of the equipment (if the venue allows it) and a Pre-Wedding meeting at a convenient time to go over their expectations for the evening.
I try to provide as much information as possible so that it answers as many of their questions before they have to ask them!
If they accept the quotation I will get some additional information from them and then send them booking forms and a song request sheet. They will pay a booking fee / deposit and then that will be everything confirmed. I will keep in touch regularly and then a couple of weeks before their wedding I will either visit them at their home or meet them at their venue and go over everything with them.
I concentrate mainly on the first dance(s) and go over their song request sheet with them. It usually takes 45 minutes.