Networking is definitely an art and especially at these kind of shi-shi-foo-foo events. I have a 1 drink limit of clear drinks (white white or spritzer, sprite, etc..) just to take the edge off. NEVER red wine and NEVER eat at the event even if they are serving hor d'oeuvres. Eat before you go. I also try avoiding talking too much business and try to keep it light. People do business with people they like as a person, as opposed to their business accomplishments.The follow-up meeting is where the business conversations come into play. If you really want to make an impression, do something nice for the person after you meet them. If you know they are looking for a good caterer or real estate agent or something, find them one or send them a gift certificate to try a new service. Show them what you can do for them and they will show you what they can do for you.