meh it was more hassle than it was worth imo. it was so annoying having to dig up my card everytime i bought something just to find out i only saved like 10 cents
oh i bought lots of food/drinks from uni last year lol. i know it adds up but it was just so annoying showing my card every time, when like every student has access to a source card anyway. i just thought it was heaven when the counter people didn't ask for my card... but i usually bring it out beforehand so i lose anyway lol.