If you haven't registered already, you can do so between 7:00 - 7:30 a.m. on Saturday. The walk itself commences at 7:30 a.m. You can get more info from the helpful young people manning the Great Brak Tourism Initiative's pop-up caravan on Long Street in the sports ground directly opposite the Peperboom Restaurant or call Allistair or Marchay on 044 620 3338. The Mossel Bay Advertiser also has a little blurb on the event - read about it here.
There's a modest R20 entry fee - and there will be a lucky draw for prizes at 9:15 a.m.
If you're curious about the route, see the map in the "Great Brak River Village - Short Walks" section of this website - I believe they are doing the Vleiland & Nature walk (#2 on the map).