Will your CEO have someone taking care of the dining room table set up (linens, glassware, flatware or silver and china) ?
What about your buffet table (linens, platters , serving utensils?) , will you be renting this or is there already a treasure trove for you to chose from (love to play with other people's stuff lol)?
Are you just going to set the buffet and leave?
Ask the host who will be setting the table and taking care of beverage refills and table clearing, KP.......