Travelling times: There are restricted travelling times in the park. No travelling is permitted within Tankwa National Park during the following times:
1 October to 31 March 19:00 – 05:30
1 April to 30 September 18:00 – 06:30
Exemption granted to visitors arriving on a Friday by no later than 21:00 at reception, to travel by means of most direct route to the reception and from the reception to their booked accommodation.
Last stops for fuel (measured from park offices) are Ceres (180km), Sutherland (140km - closed from Saturdays 13:00 for weekend), Calvinia (110km) and Middelpos (52km).
Vehicle fuel is available in all parks (or is available on the park periphery) - South African legislation stipulates that fuel stations will accept legitimate petrol/fuel/garage/credit/debit cards or cash as a form of payment for any fuel purchase.
Arrivals for accommodation from 14:00 only, departure at 10:00.
No shops, restaurants, public phones or ATMs in the park.
General Dealer and Bottle Store in Middelpos.
No cellphone reception within the park as well as main access roads.
Credit card facilities are available.
Prosopis Wood for sale in park.

Hope this will help.