North Adelaide is where the upper crust gather in Adelaide. There's a lot of very nice shops there, and different restaurants, many or which are Italian. Get your hair cut, shop for clothes, stop for a glass of wine. Its expensive, but everything seems to be very nice. Miyuki and I dropped by here for a few hours on the way back from the Barrossa. Its quite a pleasant little place. You can come here and drink tea from porceclain cups with your little finger in the air.
Anything from a backpack up should do you fine, depending on how much you want to pack. You probably only need an umbrella. If you get electric shocks a lot, try to avoid synthetic clothing because Adelaide is very dry. Sunscreen - 30+!! Otherwise, pretty much everything is there. You have to ask for paracetamol over the counter though. Lots of sunscreen. If you are hiking or camping in the bush, take long pants, a long sleeved shirt and sensible shoes, even if it is hot. If camping in desert areas, take warm clothes for the night - even in summer it gets very cold.
many people seem to head off...
many people seem to head off to Kangaroo Island once they get to Adelaide. I didn't make it there, but it's a major centre for wildlife in the state, and it's a good place for spotting kangaroos, seals and many other species.
The Exeter Hotel
It's a pub that's free to get into to see live entertainment. Great bands play in the beer garden and the staff is friendly. The people who go there are usually university students but other alternative types go there as well. Many females also populate this pub. :) Wear whatever you feel comfortable in except leave the thongs and tank tops at home.