I have not been to Ariel's Grotto, as I have two boys. I have been to both the character breakfast at the Plaza and Goofy's Kitchen. Between those two, hands down, Goofy's Kitchen wins on every level. The selection of food is amazing and tastes wonderful! There is dancing with the kids and characters. Goofy comes out and "spills" a tub of dishes on the floor. The characters we have seen there are the Fairy Godmother, Wendy, Alice in Wonderland, Goofy, Max (Goofy's son?), Pluto, Donald Duck, Chip and Dale, and a few others which are slipping my mind at the moment.
My just turned two year old is a tad obsessed with Donald Duck. He would run up to Donald, where he was always standing near the desserts, and start quacking. Now, my toddler has a duck quack that sounds very much like a real duck....cracks us up. He would run up there, squat down like a duck, and start quacking. "Donald" was so shocked to hear this the first time, she laughed out loud! My husband came running back to the table, so proud that Tyler had gotten a character to make a sound! He swears he heard her laugh. I have pictures of Tyler laying on the floor in front of Donald, and him laying down looking at his face, starting to lay on top of him, holding him down for a picture.....great shots!
It makes me tear up just thinking about it, because Tyler was beyond thrilled to be with Donald Duck. As all of you Disney fans know...to him it wasn't a person in a costume, he was with DONALD DUCK! We went to Goofy's Kitchen three times during the week we were there. Every time, he got the same attention from Donald. I have no idea who was in that costume those days, but they made a huge impact on my little two year old. I emailed Disneyland complimenting this cast member profusely.
At the Plaza, the price was the same, I believe. Correct me if I'm wrong here! But, the food was no where near as good and the selection was very slim. And, the character interaction doesn't come close to the time and attention given at Goofy's Kitchen. And, there is not any "show" put on by the characters at the Plaza, no dancing with the kids, etc..