We have eaten there quite a few times – it is not a special experience like most WDW restaurants. There is nothing noteworthy about it. If you are looking for a restaurant in that hotel that is special, Yachtsman’s is much nicer with better food, in my opinion.
However, CG is well-priced, serviceable food. We often stay at Boardwalk, and so it is nice to have CG just across the bay for meals when we don’t want to jump through the hoops of getting into a park to eat.
If I were making reservations in advance of my trip, I probably would not book at CG. But it is terrific for a last-minute sit-down meal if you need it.