We are humans, so yes it's appreciated! (Especially if we're contracted for six hours or more.) Since dinner time isn't usually a photogenic activity (trust us), we ask to be served toward the beginning with you or your guests. Many venues offer a "vendor meal" to make this quick and easy. By the time we're done eating, you'll probably be starting up other activities (dancing, cake cutting, toasts, etc) and we'll be all refreshed and ready!