Get Involved Vendors welcome! We welcome vendors of all kinds. Please consider contributing your talents to our festival. All vendor contracts must be submitted by Friday, May 31, 2019. ARTS + CRAFTS VENDOR CONTRACT FOOD VENDOR CONTRACT MN ST19 SALES TAX FORM VENDOR RULES Become a volunteer. Volunteering at Solstice Outdoor Music Festival is a great way to enjoy the weekend festivities. Come to volunteer, stay for the music! Volunteer at your own risk. Solstice Outdoor Music Festival is not responsible for accidents or injuries.