iacisrmma….
Perhaps you can do a milchig stand-up Kiddush after davening for about $25/pp in Flatbush but thats NOT the frame of reference in the original question which implied the family was doing a full seated meal with music, photographer and simcha hall rental…. get real. They are not doing some quickie Kiddush catered by the Sisterhood or fish platters from some local takeout place (hopefully not sushi from Jin in Passaic)