As the title says, if you're a T2 Tea Society member you can go in and get a free 'full-sized brew' at any QLD store. Tea Society membership is free, go here to sign up if you're not a member already.
(first deal posting so apologies if I got anything wrong or if it's just a crap bargain)
You can already get a free cup of cold tea from the counter of T2 in Vic., and don't need to give them any email address!
Usually they don't give out free full sized cups, just sample size
T2 at Carindale pretty much has free tea in sample sized cups all the time with different flavours. Sometimes a pot/jug is made up so you can just pour your own. There is no tea nazi to stop you from taking more than one cup or going for thirds of the same flavour.
That goes for just about all T2 stores, but it's hardly the same as getting a large takeaway cup of any flavour you like with milk/honey/whatever.
Tea Society lol