; (2) the number of participants attending; (3) a detailed statement of the costs to the United States Government, including— (A) the cost of any food or beverages; (B) the cost of any audio-visual services; (C) the cost of employee or contractor travel to and from the conference; and (D) a discussion of the methodology used to determine which costs relate to the conference; and (4) a description of the contracting procedures used including— (A) whether contracts were awarded on a competitive basis