Just to clarify, the limit is 28 days issuing being issued a VIC, not 28 occasions. So if you come and go numerous times in one day that should, by the regulations, only count as one issue.
If a person has held a VIC for a particular airport for less than a
total of 28 days in the previous 12 months, a VIC issuer may issue
a VIC for that airport to the person only if the period for which the
VIC will be valid will not result in the person holding a VIC for
that airport for more than a total of 28 days in a 12 month period.