In 2006, the 5 days 3/11/06 to 7/11/06 inclusive, shows a total of 31 parties commencing a walk.
85 people.
It can get busy.
We were 4 of them.
OK, sorry to scare you off.
Have a read of
this post and you will understand why there were so many people...
Runners, support crew, media, maybe spectators too...
We didn't know.
Anyhow the weather we had was good - got a bit of rain one day but overall quite acceptable. Still can get cool at night up there but a fantastic place.
If you are only going for a few days you should be able to get a pretty good idea of the weather forecast before you head in, if there is any uncertainty you can gear up for anything. And the advantage that if it does pack it in and you decide a retreat is prudent, half a day and you're at the car. Don't wait for the snow to get a foot thick before retreating, it could get a lot thicker by the time you're on your way. But snow like that is unlikely and such a storm would show up as a possibility on the forecasts.
Camping availability - the logbook near the start is going to be your best guide (or the number of cars at the carpark).
There are other areas where a camp is possible, some areas are off-limits to camping due to regeneration or possible degradation of sensitive areas. Best to check with the ranger that looks after that park - I think it's
Mole Creek.