Before going to Kenya I read everywhere that I had to go to Carnivore while in Nairobi. That being said, I was excited to experience the place.
Their schtick is to serve you all kinds of exotic meats on skewers in unlimited amounts. It doesn't stop coming until you put the sign down on your table.
First thing, don't fall for the "Magic Stick" drink. As soon as they seat you a hostess will come over with a mixologist and offer you the drink. You are led to believe that it is included in the price. It isn't. It's a ripoff.
Secondly, yes you can have as much as you want, but since the meat is overcooked, bad cuts, you don't want much.
There are many great restaurants in Nairobi -- skip this one!