This place is great if you are accustomed to North American Restaurants, I mean, it is an American Restaurant.
You will get the normal done up interiors with tows and stuff all stuck to the wall.
The food is generall very meat based, with a large plethora of starters that include, wings, salads, various dip based bites, fries onion rings, etc ,etc.
There tons of main courses, starting from steaks (not the best), burgers (really good), fish (salmon mostly) and chicken (fantastic tasting).
Its very rare that you will have a bad time at Chilli's.
I stayed away from the Al-Mariah Chilli's ever since the Abu Dhabi Municipality shut it down. You can read all about it here http://www.thenational.ae/news/uae-news/chilis-closed-by-health-violations-authority-says.
But generally I am always satisfied when I visit Chilli's!