Some years ago our singer accepted a wedding gig for a friend of his and said we'd do it for free and a bar tab. Myself and our drummer didn't know the couple. We kept asking what we would be getting paid but the singer was a bit vague. The gig was one of the best we've had and the free booze went down well. Got a taxi home and picked up the kit the next day. I wil not do a gig for free unless I personally know the person or its for charity. A free bar is ok but I won't drink anything like my fee. When pressed the singer admitted he really meant that him and the guitarist would do it for free as the know the couple but didn't clarity that with them properly so we all did it for free. This was later and after he paid myself and the drummer our fee out of his own pocket. He has not made the same mistake again and we discuss wedding and party fees between us before offering our services.