Yes, it is a challenging drive. If you get a high-clearance 4X4 you will be ok. We had a newer Toyota Hilux with great thread mud tires. Helped with traction in the sand. Also, you will need to deflate tires to get more traction, so you will need a battery operated compressor to inflate tires again. There is some thick sand and deep ruts covered by mopane branches and it can go on for 1-2 km before you reach steadier ground. But hey, it's part of the adventure. Be sure to have topped off your double gas tank in Kasane, have plenty of water and food supplies with you just in case. We never needed a Satphone, but some feel better to rent one... Just in case. There are no people or villages after you pass the last village and the tar road stops until you get to either Linyanti or Savuti. For us, Linyanti was not worth it, pretty, but almost no game, whereas there was plenty in Savuti, including lions and leopard.
Probably most of my frustration came from lack of signage or impassable wet roads that were marked as dry tracks on the Rodt maps of Chobe and Moremi. So a GPS may help with that. We has six weeks in Namibia and Botswana, so we felt we saw plenty of game without having a guide. Loved the freedom and the AC in our car. It will be very hot for people from Europe. 40+ degrees. So cold drinks in a cool box were a must. Nights will be much cooler with all the flaps of the tent open. Yes, you will have night visitors in Chobe and Moremi as there are NO fences..
Be prepared but have fun and take tons of pic. We ended up with 8000!!!!