Suits and ties are appropriate dress for men, while suits, dresses, dress slacks, etc. are appropriate for women.
Most volunteers are accustomed to similar attire in the workplace.
Allot plenty of time in driving to the fair site in case of road delays, car problems, emergencies, and so forth. Arrive at least thirty minutes before the program to allow for table set-up, freshening up, refreshments, and so forth. Materials for the fair will be provided in advance. The most important piece of literature is the college fair brochure. It gives an overview of the University and has a business-reply card in the back if students want additional information.