It is lawful for a person:
(a) in or at an establishment, camp, unit, mess or canteen of the Defence Force;
(b) on board a vessel of the Defence Force; or
(c) at a gathering of members of the Defence Force (with or without guests) approved by the Chief of the Defence Force;
notwithstanding any provision of the law of a State or Territory:
(d) if the person is a member of the Defence Force or of a mess, or is a guest of such a member--to have in his or her possession, sell, supply, consume or buy intoxicating liquor; or
(e) in any other case--to have in his or her possession, sell or supply intoxicating liquor;
in accordance with conditions determined by the Chief of the Defence Force.