No. A public entity or private business is not responsible for the care and supervision of a service animal.
Buildings or outdoor venues designed for complete accessibility can become inaccessible without proper attention when setting up temporary events such as your crafts workshop. A poorly placed extension cord can make your crafts workshop venue unusable to people with mobility disabilities. In regards to the ADA, the extension cords need to be addressed if they are obstructing the accessible route or access to craft workshop activities for people with disabilities.