One of the best things you can do while in Nairobi on a free day is to get out of the busy city center, especially on a weekday, I would suggest you ask around for a budget tour to giraffe center, karen blixen,bomas of kenya or animal orphanage.You can devide the days into 2, the first day, you can do the excursions and the last day, depending on where the masai market will be, you can go and buy the souvernirs and get back to your hotel and park before leaving for home,All the best and welcome to Africa.
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