Went here once for lunch with some co-workers on Friday afternoon, the place was really busy. The lineup was all the way out the door at one point. The dining area is quite small, most people do takeouts.
Food price is a little expensive for fish and chips, however they actually taste good. Fresh fish, decent batter, good tartar sauce, and good fries.
There is pretty much no service, you order what you want, then you wait for your food until they call your your number to pick up your order.
Although it was very busy at the time, we were lucky we found a table. Most people there just eat and get out quickly. This may not be the case if you go in a non-peak hours. Another note: their chairs are ridiculously uncomfortable to sit on.
TL/DR note: Although they might be a little over-priced, their food still taste good. I would recommend ordering for takeouts instead of dining in.