Update CHECK US OUT FOR OPEN GYMS, PARTIES, OR CLASSES! May 10, 2016 danvilleinstituteofgymnastics Leave a comment Our open gyms are full of fun; Check us out! Wednesday, Friday, and Saturday 12 PM-2 PM!! $5 for members, $10 for non-members. To become a member just fill out a registration form, and pay the $30 registration fee.