Daily Mandatory Charge includes: . 195% Tourism Assessment fee paid to the state of California, 2% Tourism Improvement District fee paid to the city of Petaluma and 2% Tourism Business Improvement Assessment paid to the county of Sonoma. Daily Mandatory Charge includes: . 195% Tourism Assessment fee paid to the state of California, 2% Tourism Improvement District fee paid to the city of Petaluma and 2% Tourism Business Improvement Assessment paid to the county of Sonoma.