Rent a van and drive with mates from Cape town to Hole-in-the-wall will take 14 hours to get there. Last 2 hours on poor roads. December has great weather, but will be busy and most backpackers booked up because lots of locals use them. Camping is a viable option, just ask permission from the local chief/elder. The drive is long but very scenic. Take the coast road along the Garden route and stop off for a bungee jump at Gourtiz Bridge, then stop in Wilderness for some beach time, in Knysna for a day or two - very pretty and best bakery in RSA, then up to Port ELizabeth and East London, neither of which are worth seeing to be honest.

The campsite at coffee bay is really nice - stay there if you're into camping or the Coffee Shack is like the best backpackers ever... but you might need to book in advance