Firstly its been a very good year at WCNP with rain and thus for flowers and there will be no doubt some of the dune species still flowering at that time especially if the rains continue.
In november if you are there during the week and not a weekend, its one of my best months for caracal in the park. You have a great chance of seeing them in the dune area both sides of the Churchhaven turnoff. Drive slowly and scan the large bushes next to open patches of sand.
Snakes are peaking at this time as the warmer weather and high numbers of rodents makes for a frenzy of activity.
BLack Harriers are a good bet and driving from the Langebaan gate to Tsarbank, you will have a very good chance of seeing a few of them hunting next to the road.
Large mammals are not what the park is renowned for as Hugh mentions - however Eland have been seen by myself almost everytime I have been in the park this year.
Kuduand Bontebok are encountered closer to Kraalbaai and Tsarbank. Cape Grysbok, Steenbok can be seen anywhere and as you come along the dust road towards Tsarbank, park on the RHS of the road at the top of the hill which overlooks Postberg. Get the Binos out and you can easily see 5 large mammal species on the average day - Mountain Zebra, Eland, Gemsbok, Wildebeest, Springbok, Kudu, Bontebok etc and if you are lucky then even Bat Eared Foxes in the cooler part pf the day or anytime of day in November if its not too hot.
Spend time scanning for whales at the whale lookout and anytime you get a view of the ocean.
When you get to Tsarbank, drive right around the to the corner which looks out towards Kreeftebaai. At this point if you look west you will see an island with some concrete sturcutres on it. There is a large seal and bird colony there. If youre up for a walk, walk to the end of the beach and onto a little island which is accessible at low tide. Its a lovely walk and this island offers great views of the seal colony on the neighbouring island. Make sure you have Binos though!
Spend time at Abrahamskraal hide (and Geelbek hide at mid to low tide and Seeberg at hightide) and at Abrahamskraal if youre lucky you might see African Rail but there are many species of waterbird here especially on the far side of the pond/vlei. Crakes, teals, coots, dabchicks, herons, spoonbills ibis, egrets, marsh harrier and many more. Geelbek hides often a plethora of the tricky waterbird species as well as many better known ones. THere is also a great walk from Geelbek along the marsh areas.
Have fun and focus on the birds, insects and reptiles etc and you will have a great time with something special revealing itself.