Our experience at Poly was great. We had a light breakfast every morning. They do not provide water bottles or soda to take with you. I heard they did a long time ago and people took advantage, walking out with stacks of them! But we ordered water for our room. We did take fresh fruit (apples, bananas, etc.) to bring as snacks from the lounge. The kids would run in a grab snacks during our midday break. Our kids were little so we did not do late nights and we were able to have wine each night.
You cannot look at it as "do you get your money's worth." If that is what you are looking for, you cannot add up what you ate and find the price "worth it." We did it mainly for the room.....we wanted a guaranteed view of the castle and asking for a club level water view gave us that. And the convenience of not having to have so many snacks in our room....running to the lounge was a nice extra. My kids, even when little, are constant eaters. Even if we were eating a breakfast at crystal palace, they wanted to eat breakfast in the lounge first to tide them over. And would eat the apple or banana on the monorail. And then eat the breakfast. So having this breakfast available each day as a start was really nice. (kids were psyched to get fruit loops because we don't eat those at home!)
We are doing Boardwalk club level this summer. Hope we enjoy it as well.