So I went here for prom last year. Forgot to write a review but I saw Otto's featured in the State Journal so I just wanted to add some stuff.
First of all, if you're a vegetarian, you can DEFINITELY eat here. I'm a vegan now and it might be a little tricky, but still doable. The review in the paper said it wasn't recommended for veg people but I ate plenty and well here.
The group I came with was small and the place wasn't busy but service was still kind of slow. That's my only complaint.
As for the food - yummy! My group (all three of us :p) started with the Mediterranean Platter. It was delish and fresh. I believe one of my friends had the salmon in grape leaves and loved it. She let me try the sauteed spinach and that was good too. In fact, she still talks about going back again haha. My other friend had the shrimp app as her main course and enjoyed it as well. I had spinach artichoke pasta. It was om nom nommy and I'd definitely go back.