Standing Concerts NO under 12s to stand. Children aged 12 to 13 years MUST be accompanied by an adult. 1 adult may supervise up to a maximum of 4 children. Children 14 years and over are able to stand without an accompanying adult at discretion of parents. Seated Concerts 1 adult may supervise a maximum of 10 children under 14. 14 years and over are not required to have an accompanying adult It is strongly recommended that all unaccompanied children stay in the venue until they are collected. This information is subject to change.