We ate at Garden Grove on Tues night, and only tried it b/c we had a $25 gift certificate from restaurant.com
Pros:
It's never crowded, so you don't need a reservation.
Made to order pasta is pretty decent
Goofy and Pluto (if you haven't already seen them elsewhere)
Cons:
Beverages not included in buffet price ($3 extra for each iced tea we ordered)
Service was horrible (dirty plates piled up on our table that were never cleared, had to wait forever just to get the check)
Other than the pasta, the food was below average.
Pros and Cons being said, I definitely wouldn't do it without the $25 restaurant.com certificate. Personally, even with the certificate, I wouldn't do it again either. Ended up being around $70 for 2 adults (after the discount) b/c of drinks and the mandatory 18% gratuity (b/c of gift cert). We have gotten much better meals for that price elsewhere.
Next time, I'll stick to the character breakfasts. The breakfast food is just so much better at the buffets in my opinion.