Got this in an email from Mad Mex:
We are celebrating the grand opening of our new store at Royal Randwick shoping centre with a special offer for you and your amigos: 2 meals for the price of 1 this Thursday 29 November!
Buy one meal and get another meal of equal or lesser value free. Drinks not included in offer. Valid at Mad Mex Randwick on Thursday 29 November 11.00am – 10.00pm while stocks last. Not available with any other offer.
Thanks OP! I'll be around Randwick on that day :)