Cape Nature minimum group size

Hi. Myself and a partner want to do the Swellendam 5 day trail, but the minimum group size is 3 for all overnight hiking. For safety reasons I understand this.
I imagine other hikers have encountered this limitation. Is there a way to join another group or see who else has booked this hike so we can join?

I spoke with cape nature reservations about this but they can not disclose any information about other groups. Joining another group has to be done independently they said.

Has anyone else had this problem and can suggest a work around? Thanks in advance!