We are having some concerns regarding our guests attire. We have heard feedback (mainly from the future mother in law )that guests will be dressing "casually" because it is a barn wedding. It is actually an evening wedding at The Golden Lamb Buttery, which is a classy restaurant located in a barn. On a regular basis they have a preferred dress code of Jacket and tie for dinner. It is not black tie but it is also not jeans and a t shirt. How do we inform the guests that cocktail party attire is preferred without offending them?