Looking for something to do this long weekend? Why not head to the Mall for the day? This Monday 11th June, the Queen's Birthday public holiday, Rundle Mall will be open and trading from 11am-5pm. The Mall is also currently having its mid-year sales! What a perfect time to pick up that special something you've had your eye on! Retailers across the mall are hosting massive sales, including David Jones, Witchery, Kikki K, and Peter Alexander, who are all offering up…