It seems the adjudicators in NSW aren’t as hard line as those in QLD regarding visitor parking spots (searching the online rulings). They seem to allow you to vote to let residents use the Visitor Parking Bays providing you obtain permission from the EC or OC.
Quote from a ref adjudicators ruling in QLD
While it may be true that the visitor car spaces may be vacant much, or most, of the time, these are designated visitor spaces required by the local government, the Gold Coast City Council, to be used for visitor’s parking. These spaces are a universal local government requirement for the registration of a community titles scheme, and remain a continuing requirement of the scheme. Even if the body corporate wanted to use these spaces for resident parking, or some other purpose, it is not able to do so…There is no question of the respondent, or any person other than a genuine visitor, being allowed to park in the designated visitor car spaces.”
In QLD their is no question of it being something the OC or EC can decide, they have to get the approval of the council to release the visitor parking bays for other use (unlikely IMHO). Most people in QLD seem to think that OC or EC can approve this but in reality they cannot.
If you let residents use the visitor parking bays it becomes a free for all to the detriment of ALL residents.