Yep, I know where the camp ground is
I'll be staying at the YHA on the night of the 12th rather than camping (want to have a shower after 2 weeks in the mountains lol). I am meeting with my Dad and Uncle on the 12th then on the 13th we are making our way to muller hut, weather permitting. So we will pop by the camp ground before we go up to see if you are there. If you aren't, perhaps we can meet up at the hut? - it's a pretty straight forward walk up there and there are normally a few people on the trail.
Our rough plan is to walk up ollivier and kitchener on the 13th, mt Annette on the 14th and Sealy on the 15th and then back to cook village on the 15th (all subject to weather of course).