You can't go wrong with either of the PO resorts. I think the main swimming pool is better at Riverside as well. It also has lots of quiet pools. Yes you can get breakfast at riverside with lots of choice as well. We tended to go for the make your own omlette in the mornings which also comes with breakfast potatoes. They also do the big Mickey Waffles

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Yes FQ does only have one bus stop but thats all it needs really as it is a lovely small resort. Riverside has 4 stops you can use which is useful when you are going to the MK as it does the other stops before it picks up at the main stop where there are loads of people waiting.
Both resorts where showing Disney movies outside and we stopped to watch Toystory one night..lovely thing to do.
You can walk between the two resorts in a few mins and use each others facilities...so the best of both worlds really.
edited: I suddenly thought you may be referring to the sit down breakfast (table service one) that they used to do. They stopped doing that years ago now and only do lunch and dinner at the restaurant in Riverside. Mind you they do let you take your breakfast into the restaurant area from the food court and its so much more quiet as not many people know this.