March usually sees the last of the rains, and the bush is verdant. A lovely time for those happy to enjoy the space, big skies, and landscapes and prepared to spend a little more time on the move looking for good game sightings.
Nogatsaa can simply be too wet to traverse at this time. Zebra could be migrating through Savuti. Nearby Victoria Falls will be in a full flood if the rains were good, so consider it an add-on.
March and April are the highest malaria risks on the Chobe Riverside.