What do your rules say about the use of common property – if you don’t have specific rules about the use of common property, then the model rules apply.
I would be looking at
4.1 Use of common property
(7) The owners corporation may impose reasonable conditions on a lot owner’s right or an occupier’s right to access or use common property to protect the quiet enjoyment, safety and security of other lot owners, including but not limited to imposing operating hours on facilities such as gymnasiums and swimming pools.
AND
6.2 Noise and other nuisance control
(1) An owner or occupier of a lot, or a guest of an owner or occupier, must not unreasonably create any noise likely to interfere with the peaceful enjoyment of any other person entitled to use the common property.
The strata laws on abandoned goods are likely to be superseded by the laws covering stolen property.