Visited the Fountain earlier this week with my wife and two children, having read many of the positive reviews, and we were all very disappointed.
The decor and ambience is tired, and that is being kind! The carpet felt sticky underfoot and generally the place made you want to go home and take a shower.
Food was average, but not as good as I had expected and I would describe it as better than many take aways, but worse than many chinese food restaurants. Those who said it was the best chinese outside of London are way off the mark and need to try some decent chinese food. However, perhaps that is because there seem to be few decent chinese restauants in the Newmarket area.
The portions were surprisingly small for the money and overall it was certainly expensive for the quality and quantity of food, not to mention the ambiance.
I can't say that we will be rushing back and I would be prepared to travel a little further to get a better meal.