If your trip to Springs Preserve is last minute and you are hungry when you arrive then this restaurant is acceptable. Otherwise, eat elsewhere. The balcony view of Las Vegas and the Preserve below is great but the food selections are few and expensive for what you get. You can see the menu at this link: http://www.springspreserve.org/assets/pdf/plan_cafe_menu_fall2010.pdf
The chicken salad (special of the day) was $10. There were about three cranberries in it and a small amount of chicken. I am supportive of sustainable food and local sourcing, but at that price the Cafe could at least match the amount of food I'd get from a chicken salad at Burger King.
Skip the rum smoothie. Not a hint of alcohol.
It would be great if the balcony was open after 3P on weekdays. (It has an additional separate entrance from the cafe.) It's a great location to take sunset shots.