We had desserts with our CS meals last month. Where there was some confusion was with the children's meals. They often gave my dd4 applesauce as her dessert. My daughter took one look at the chocolate cake and declared that applesauce was NOT dessert. Usually we all just shared dh's and my dessert, but a few times we went back up and asked for another dessert for my dd. The usually just handed one over.
BTW- CS breakfasts do not seem like the best use of CS- especially if you are eating in a resort food court. We usually had our refillable mugs with us which meant we didn't need the drink part and didn't get any dessert.