Hi I'll be coming to Nairobi for work at the end of the month, and I will have a Sunday free. I'd like to do a one day "safari" in Nairobi National park. I see it is highly recommended but I can't find a lot of details. Should I make a reservation with a company to take me around beforehand? Should I just take a cab there by myself without any other arrangements? Are there tours organized by the park? Thanks for your advice.