This will be served where you will be staying. You can choose to pay for bed and breakfast or have your breakfast elsewhere.
Food in Kenya is not expensive. There are restaurants at KICC and you can also find hotels nearby. You can get a good meal at Ksh. 500 or less (including breakfast). Set aside Ksh. 2,000 for your meals requirements per day. If you want to spend more that is ok. We will update this page with more comprehensive information soon as regards where you can have meals during lunch time.
This will depend on where you will be staying. On the other hand you can buy your lunch in the city centre.