My sister chose the restaurant last weekend and we ended up at Sunsets. No vegan options were listed on their menu so I called ahead to speak with the chef. The (very nice) man I spoke with told me that they don't create meals that aren't specifically on their menu but he was willing to work with me.
After working with him on what I could and could not eat, he asked what I would suggest. I was disappointed that he didn't have any ideas as I appreciate creativity and innovation in the kitchen. I asked what he could do with a portobello mushroom (on his menu elsewhere) and he didn't know. In the end I asked for a mushroom stir fry which came with a bottled (but vegan) Cantonese sauce with vegetables and rice. I appreciated his willingness to work with me and to read me the ingredients in the bottle but I would have loved to hear he made his sauces from scratch.
At lunch the next day I ordered a roasted pear salad (without the cheese) and the aforementioned stir fry. The ingredients in the salad were tasteless and the limp pears tasted canned rather than roasted. My entree arrived cold and had to be sent back. My sisters enjoyed the spinach dip but my sister's cheese quesadilla was so overwhelmingly cheesy that she didn't eat it. My reheated stirfry was edible but not enjoyable. I enjoyed my sister's fries more, although they were not particularly well-seasoned either.
Overall message: if you're vegetarian Sunset's will be okay. If you're vegan, they will work with you but you will need to have the ideas for what they should make. Dressings and sauces are bottled and not particularly flavorful.