I went to an event that was lightly attended the other evening. Regardless of the limited number of participants, however, I met some delightful individuals. Numbers don't always matter. Time you spend meeting new people does, however, and this opportunity still delivered. When people get caught up in numbers, they sometimes miss the possibilities in front of them. With less competition for people's attention, you have greater opportunity to understand those you meet, educate them on who you are and what you do and begin or enhance a relationship.
If you don't see quantity at an event, go for quality of experience by developing deeper relationships with those in attendance.