I'm visiting the family at Christmas and have a spare week.... Is it just absolutely crazy to think about heading up to the Rocklands OR (with expectations being very low) is it possible I might be able to drag myself up something in the mornings and evenings? I'm not going to be grade hunting and would treat it more like an opportunity to explore with a bit of falling off things involved..
I've climbed in the Cedarberg over Christmas. It's not ideal but, as you say, if you are prepared to get up early, it can be done. What are you going to do during the day though? Traditionally we used to go swimming and have a siesta before the braai. Hardy hiking is possible if, like me, you aren't too bothered by the heat.