A bon vivant is someone who's the life of the party, and who enjoys life's luxuries. If you're a bon vivant, you probably have an active social life.
A bon vivant enjoys fine dining and traveling in style — in general, he prefers the most luxurious experiences. Bon vivants are also known for their many friends and acquaintances, and their love of socializing. The phrase is French, meaning "one fond of good living" or "one who lives well," from bon, "good," and vivre, "to live."