If you are making plans for next weekend already, here’s something you might want to mark on your calendar… The 20th Sebastian Clambake “Lagoon Festival,” is set for this Friday through Sunday at Riverview Park in Sebastian. It’s completely run by community volunteers, with all the proceeds going toward local non-profit projects. The Clambake Foundation over the years has resulted in the donation of more than one million dollars to local charities. Entry and parking are free.