Well this is the history of Canal Days:
It started in the 70s as a one day (last Saturday in June) arts festival. A few years later, boaters started going to that and realized arts festivals suck.

Alcohol was brought in leading to women disrobing. Later on, beads came into play as well as more booze. This lead to more women disrobing (which is legal in the state of Maryland all all of it's waters). Over the years, the boaters extended their stay and now the festivities begin early Thursday through early Sunday every year. Some even show up on Wednesday afternoon now, so I suspect it will eventually evolve to the entire week
The Dockside Yacht Club point burned down in the 80s (gasoline and matches were reportedly involved). The Yacht Club property was then sold the Chesapeake Inn (now Canal Day's unofficial host). That being said, Canal Days really has no
real host but the Chesapeake Inn benefits from it AND the Inn is crazy during Canal Days. It's private property so nudity is allowed in and on Chesapeake Inn's docks.
It's basically Mardi Gras with boats, we've been going over 10 years. We arrive Thursday afternoon and stay until Sunday AM every year. You motor in, find a spot or friends to raft up with and stay until Sunday

Our raft up varies, usually 40-50 boats. It's always the last weekend in June. That happens to be June 28-July 1 this year.