In this highly competitive professional world, having an extra edge would definitely make one stand out from the crowd.
Technical knowledge is necessary but along with it developing and enhancing Business Etiquette and social skills is the way to sustained employment and professional success.
If your aim is to appear and be able to interact confidently with people in a networking event, knowing exactly what to do and who to interact with and be able to lead the conversation the way you want, the other person will surely walk away Liking and Trusting you.
Being skilled in business etiquette would help you connect better with clients and co-workers thus leading to growth and success in business.