I haven't stayed at Universal, but I can speak for the Poly Club. My family was not impressed by it. The breakfast offerings included oatmeal, cold cereal/milk, bagels, two kinds of pastries, fruit, juice and coffee. The options got old after a few days. At lunch, they had chicken or shrimp lettuce wraps, chips, veggies & dip, cookies, and rotating snack mixes. It was decent. Appetizers included a few bite sized things, veggies & dip, cheese & crackers, pb&j, fruit, beer & wine. Not very kid friendly and not very accommodating for other options. Definitely not a meal replacement. I can't recall the details of the desserts, so that gives you an idea of the impression it left on us.
I've stayed CL before and I was surprised when I had to hunt someone down each day for soy milk for my son. They seemed inconvenienced because I asked for something that wasn't out. Other places, remember your special requests and ask you when they see you. We stayed at the YC, AKL, and GF and our experiences there were so different. At the YC, they have rotating hot items at breakfast - frittatas, quiche, crepes; a chafing dish of an entrée at dinner 9roast beef, BBQ pork, salmon); mimosas on Sunday. GF has a full tea in the afternoon and a kids section with hot items every day. AKL had a chef preparing appetizers each evening.