We will be delighted to help your group with site selection, hotel options, suggestions for Fairfax County conventions, special events, and more. Discover ample event space in our Fairfax Ballroom, able to welcome 1,400 guests.We host corporate events, parties, reunions, weddings, seminars and more! Office Evolution Fairfax is the perfect location for your workspace needs. Host your business conference at Fairfax Marriott at Fair Oaks. Office Evolution offers several sizes of conference room and meeting room spaces. All meetings must be free and open to the public. Are you interested in hosting an event? Whether it's a birthday party, wedding, business meeting or picnic, the City of Fairfax has a place for you! We're so thankful you're considering us for your next reunion and we're ready to get to work for you!