I went last sunday and as they say, "your mileage may vary", like most such buffets it changes. I did not see any punch, but there was sweet coffee and masala chai.
Only one goat dish, but there was a mutton dish too. The mutton was way more meat than bone, unlike how goat dishes typically are.
I counted 32 savory dishes including two soups and rice, but could be off a little. There were 7 desserts including mango mousse and fresh fruit.
Condiments were different (southern influence?) than I have ever seen before: no chutney, no mint sauce, others new to me. No tandoori chicken or western lettuce salad (no loss).
Their website says "northern and southern Indian", maybe Northern is available when ordering off the menu?
There are 4 related restaurants, I gather. The Schaumburg location's buffet was about 2/3 the size when I scoped it out, and at BG they said theirs was largest. Chicago doesn't seem to have a website, and the storefront across the street is labeled "Hyderabad House Family Restaurant" from Google street view with similar signage. I thought I saw that Naperville is not open yet.
The food was mild to my taste, similar to other places; go to Rivaj of India, as others have suggested, and I agree, is more highly seasoned.
I forgot my camera and wasn't careful with my phone, the photos were marginal to useless, so I created one composite of maybe 2/3 to 3/4 of what was there.
some of the buffet dishes Oh, fyi, at BG they told me it gets crowded by 1:30 on Sundays.
--Carey aka underdog