I used to live pretty close to this place, and would order the veggie burger with fries fairly regularly. I'd always specify that I wanted ketchup and mustard on it and no mayo. Nearly every time I ordered it, they'd put mayonnaise on it and nothing else. This was a pretty big problem with me because a) I'm vegan and b) I specified what I wanted every single time. I gave them many chances because I figured they deserved it (and I'm also lazy as fuck). There weren't too many places willing to deliver veggie burgers to my apartment at the time, so trust me when I say I know all about this place. The fries are usually pretty shitty. You can instantly tell when they've been sitting in the basket and re-fried for a while just by the taste. That is usually the case. They taste not unlike cardboard and probably have identical nutritional properties.
Sitting down to eat here isn't really recommended. It's not very clean and the clerks usually have quite an attitude problem. Even major fast food chains give their tables a clean every hour or so. I would never recommend eating here at night - it's a popular hang-out spot for some shady characters and I have been harassed several times when just walking by.
At my previous apartment, my friends ordered the 2 for 1 special for a veggie pizza and I ordered the veggie burger. The delivery guy showed up with my veggie burger but with only one pizza. He insisted that we hadn't ordered the 2 for 1 special, but we knew we had. He called his boss and left, furious. He left the veggie burger and fries that I had ordered but brought the pizza back. He came back 20 minutes later with the 2 pizzas, one now just barely lukewarm, and one fresh one. My friends tipped the guy anyway, something he didn't deserve.
When they opened the pizza boxes it was clear that someone had spit on them. How nice.
Yeah, go here only if you're forced to at gunpoint or something.