The air is still fresh; hardy foreigners can head to the beaches on the Lido (where some businesses are still closed). May is really the best month for seeing Italy, with its sunshine, comfortable temperatures and flowers (not so many of these in Venice, of course). Good points: sunshine; comfortable climate.
Weddings are a heightened example of what sociologist Erving Goffman called front stage behavior. Goffman viewed social life as something akin to a performance, where we attempt to manage the impressions we make to others.
In social interaction, like in theatrical performances, there is a front region where the actors are on stage in from of an audience. There is also a back region, or back stage, where individuals can be themselves and get rid of their role or identity that they play when they are in front of others.