Complete the 2015 McWilliam's Online Cellar Member Survey for $30 credit to spend at their online store. You must complete the survey by March 11th 2015 to be eligible.
Their online cellar door includes wines from McWilliams, Mount Pleasant, Evans & Tate, Brand's Laira, and a few others.
The store credit is useful for stacking on top of some of the sales they have. i.e. The Mount Pleasant Elizabeth 2007 Semillon is on selling for $102 per 6-pack, stack this with credit makes it ridiculously cheap for a decent Semillon.
How long does it take for the credit to arrive?