This definition appears very rarely
Samples in periodicals archive:
ACCEO - The Association of Caravanning and Camping Exempted Organisations.
A10: ACCEO is the Association of Camping and Caravanning Exempted Organisations. A Camping or Caravanning Organisation is a club, such as the ASOC, which holds an Exemption Certificate allowing us to organise rallies for up to five days (120 hours) duration, without the need to seek planning permission.