I haven't stayed in the main building but my family enjoyed two wonderful vacations in Sugar Loaf. The rooms are beautiful and we enjoyed our stays very much.
Breakfast is very similar to that at the Polynesian concierge although the setting is more elegant. I think there are fewer tables. Some very nice little turnovers, etc as well as cereal, fruit, etc.. There are various syrups to add to your coffee or tea.
Tea service is very nice with scones, cookies, brownies that my daughter swears by, etc..
The 5-7 service offers small, elegant appetizers...roasted veggies, cheeses and crackers, some nights goat cheese on little toasted rounds, etc.. Unlike the Polynesian, I can't imagine anyone thinking they could make dinner out of these. We don't at the Polynesian either but there the offerings are ...heartier I guess..on some nights.
Besides offering no wine or cordials, there are no desserts served in the evening unlike the main building or the Polynesian. THere might still be cookies out from 5-7 sometimes?? Everything is cleared away at 7 except for the coffee, tea, etc..
Have a great time. After trying it once, you can always go back to the Polynesian next trip! We really love both.