They will refresh and re-hydrate your guests. Select protein-rich foods like cheese or egg dishes to help keep attendees alert. Celery stuffed with cream cheese is delicious and nutritious alternative. Also, we in the hospitality industry we tend to over-feed our guests. Reduce the serving size of breads, pastries, and cookies to help attendees limit what they eat.
Temperature is one of the most common complaints of guests.
You will never be able to satisfy everyone in setting a comfortable room temperature. Too warm of an environment decreases concentration level and fosters day dreaming. The best way to gauge temperature is to know your attendees. Women and older adults typically prefer a warmer setting. Men generally prefer a cooler setting.