There are so many restaurants for all budgets and of all types of cuisine in hong kong that you will be spoilt for choice.
Try the shopping centre in Sha Tin, I remember a lovely Thai place in there.
Go to ned kellys for australian drinks and live music
Go to the peninsula hotel for high tea served with a layered platter of delicious finger food.
For chinese food, you can't get better than Hutong
Have fun in hong kong, it is the most amazing place!