I work several trade shows / expos each year. Some of them produce a great deal of traffic, others not so much. I don’t get bogged down about this, though there are times that I wonder why I’m there.
The trick is to out in the work and keep delivering your message. You never really know if the person you are presenting to is a key decision maker or if they have the ear of the key decision maker. Just because there title does not start with the letter “C” does not mean that they send business your way.
The key is to work for the desired outcome. Keep hustling.