Theatre on the Lake Polson, MT Email Port Polson Players’ Theatre on the Lake Address: Theatre on the Lake Boettcher Park Polson, MT Info: Website 406-883-9212 Region: Mission Valley Upcoming events at Theatre on the Lake Jun 05 Thu Port Polson Players: Fiddler on the Roof Jun 5 - Jun 15 Polson Theatre on the Lake Music Performing Arts Theatre