Apart from the great line up year after year the festival does not have much to do in the way or entertainment.
There are some interesting stalls where you can brush your teeth with a free toothbrush and receive plenty of goodies (hats, keyrings). There are competitions on some stalls too, but they are mainly for mainland residents because they are through mobile phone companies (though I have used my large bottom lip to acquire a free belt with the guilt trip before!).
There are the odd sculpture and art installation to gaze at too.