Every now and then I will get a call from a prospective client where a DJ may not be the best entertainment option. These are usually wedding receptions where there will be no alcohol served, take place early in the day and with a very low guest count (40 or less).
Chances are that these types of events will be taking place where there will be lots of natural light due to them taking place during the day which means lighting effects will not be noticed. With such a low number of guests in attendance this means that generally the energy level will be lower and more laid back with much less focus on the dancing. In this case the volume level tends to be on the low side which lends itself to the situation much better than louder music.
Having an MC/DJ adds a certain level of formality to the event which would otherwise be lacking. This is usually what people wanting to hire DJ Entertainment for this type of event are looking for. Hiring an experienced wedding professional in a case like this is even more important than usual. Hiring anyone else would be a big mistake and an unnecessary expense.