Tomorrow is the official beginning of Carnevale in Venice. It will last until Tuesday, February 17 - Fat Tuesday or Mardi Gras which is the end of hedonistic, decadent behavior and the beginning of Lent, the long season of deprivation, fasting and reflection.
The whole Carnevale experience in Venice freaks my husband out completely. He is haunted by the elaborate costumes and particularly the masks that create expressionless faces of revelers enjoying the festivities (at least I think they are enjoying it. The masks give away nothing).