Hi Pippa:
I got a reply from the manager this morning and it states "all your *I guesses* are right. You can easily confirm what you said in the first place."
Thus if you were a self-drive you could vacate the tent around 9 a.m., have you tent steward take your luggage to reception for keeping, enjoy your morning on another drive (if you are self-drive) or watch the wildlife around camp and the waterhole, then have lunch while watching the animals and leave following lunch. However, you would have to request the late departure and lunch in advance so the manager could alert the kitchen staff there would be extra people for lunch. In the past the charter flights (there are no regular airline flights to Tsavo) left camp around 9 or 10 a.m. Since SXS has a brand new charter plane to take their clients to Satao Elerai Camp near Amboseli, I am not sure if there is an option for an afternoon charter flight. You could email managing director of SXS at: torben@southerncrosssafaris.com to see if an afternoon charter would be possible. Most foreign tourists arrive at camp either by charter plane or on the SXS private bus from Mombasa.
I would not advise a self-drive from Mombasa. It is a two hour drive to Buchuma Gate - then another hour from Buchuma Gate through the park to camp. The traffic on the Nairobi-Mombasa highway is crazy with many huge, slow-moving trucks from all over Africa heading to or from Mombasa port with their loads. Though it is a paved road, it is only 2 lanes so getting past the slow moving trucks is not always easy. Unless you've have a lot of experience driving in Kenya, I wouldn't advise a self-drive. I've driven for over 50 years and I wouldn't dream of driving. Kenyan roads are poorly marked (few direction signs) and I would find myself driving around the same round-abouts all day long in Mombasa and never get out of town The roads in the park go from murram and bumpy to thick sand so one should be experienced to do this.
If you opt for being picked up at your beach hotel and take the private bus, it is a very easy ride. You can choose to get a little extra sleep, read a book or listen to the Southern Cross Safari lecturer who tells everyone about the animals you will see, etc. At the Buchuma Gate you are transferred to your Satao Camp guide who will check you into the park and pay the park fees for you. You then proceed slowly in the LandRover/LandCruiser, game-drive style, to camp - stopping to see wildlife you may see on the way. It is about an hour from Buchuma Gate to camp. Upon arrival you'll check in, be shown to your tent and then enjoy a very enjoyable lunch watching the waterhole before heading for a game drive at 4:00. This is the cheapest way to go, but you would be leaving camp at 9 a.m. with no option for a late departure.
Another option, and one I've used frequently because my flight from Nairobi gets into Mombasa after the SXS bus has left Mombasa for camp, is called the "connoiseur" safari. This is a private 4 wheel drive vehicle (usually a Prado or LandCruiser) with guide to be used by you/your clients for as many days as you wish to have a private guide. They pick me up directly at Moi Airport and drive me directly to Satao so I won't have to spend a day and overnight in Mombasa. If you wanted to use the "connoiseur" for your entire stay, then I think you could plan what time you wanted to leave. When I use the "connoiseur" to get TO camp, I will take the private SXS bus back to Mombasa. In fact that is what I'm doing in February. I always plan on flying from Mombasa to Nairobi one day before heading out of the country. Why? because on several occasions flights were cancelled in Mombasa and if I had a flight from Nairobi that night I would never have made it. Thus I have one night and a day room the next day in Nairobi until departure home.
It will all depend on how much your clients want to spend and how much time they have available.
I've used the charter flight, "connoiseur" drive-in and the SXS private bus and all are very good.
Hope this helps.