I am probably too late to get an answer in for this, but here goes anyway.
There's soem good camping along the river at Tocumwal and the camping ground in town is OK too.
The restaurant in the old bank building is fabulous - posh looking but not too expensive and great food. The bakery, of course is a real treat, and you could go there for your three meals a day!!
You can camp in Griffith for free at Lake Wyangan for a maximum of three days. The facilities are basic, but you are a few kms out of town and out of the way and its quiet. The water level is up a bit and friends say they cought some fish last week.
for things to do around Griffith.
Hope you have a good time.