Depends on how they manage the process.
Under health and safety particularly child protection I could argue that allowing any children under 14 to run with adults is negligent as adults falling on children is a risk.
Some events will segregate out and allow participation of groups at a time. suggest you see how many would attend then ask the event organisers to give you a time slot.
If they refuse they are either
organisers or negative people. Also could ask a leading question about thier support for those with disabilities. if they allow other forms of mechanical devices on site they should allow Bocks