Bon vivants are people who live the good life and appreciate the finer things in life such as--good wine, the arts, parties, fine restaurants.
Claire and Holden are true Bon vivants. They are fond of the good life and finer things in love. Claire and Holden keep running into each other at the same parties. They both have the same circle of friends who are also bon vivants.
Audience stems from the word audio, so it only makes sense to change that to video. Hence a videance, a group of people paying attention to motion pictures rather than just sound as heard on a radio.