Was in there on a Sunday and as expected it was crazy busy. None the less I waited twenty plus minutes for a table for two. After my experience there that day I don't think I'll be going back.
I've been to Rol San countless of times to the point of having "regular" status. The food is good and affordable. Service is most of the time not great but sometimes they will surprise you (watch out for this one guy who "runs the show". Totally rude. Hate him). Also, minor detail, they serve you tea and charge you for it even when you don't order it. Those things never deterred me from going there because I liked the cheap food and it's open really late.
I've heard of stories of people being over charged and I stupidly thought since I had been going for years and they knew my face it would never happen to me. Well it did. They added an extra item to the bill. It arrived at the table and when I said I didn't order it the "show runner" showed me the ordering card and there was a 1 next to this item. What total bullshit. Paid for it anyway as I couldn't prove I didn't order it. Then they begged for a better tip. Go Fuck yourselves.
Don't go here. Rol San is bullshit. Go to Noble Seafood around the corner on Dundas west of Spadina. Better. And nicer atmosphere. And they don't have the shitty plastic on the tables. Or that shitty guy.