I work at a Family Mart… the food is horrible most the time, makes me wonder why anyone buys them (I mean the bian dan and stuff, not the manufactured stuff) 7-11’s food is way better like their guan don zhu is much better compared to family mart’s and I actually go there for slurpees every now and then. The family mart I work at doesn’t have any “slurpee” so I can’t comment. I can’t comment on the bian dan of either place but I can say Family Mart’s suck and the only reason I eat them is because I get them free (ones that had to be taken off because it’s overdue) and I have no comment about 7-11’s because I generally don’t buy microwaved stuff… if I wanted something I’d go to a restaurant that sells it because you usually get more for your money.
As far as service and friendliness of the staff, I find that either place are about the same. I know the corporate is really anal about service though.