We've always been very happy with the amount of wildlife in that area, particularly if you aren't completely obsessed by the 'Big 5', there is lots of variety, big family groups of ellies, and Sunset Dam will be good for birds in February and guarantee you hippos and crocs. As Johan has said, in February it is rainy season so water is a bit more plentiful, and thankfully, it looks to have been a good year for rain this summer. I love Lower Sabie. I don't find it a particularly big camp, it has much smaller than Skukuza, it is smaller than Satara or Berg en Dal in terms of capacity and it has lots of open space so it never feels crowded except on the deck during the day. Even the restaurant at night is not full (or at least it won't be in February, might be different in the school holidays!). I love the fact Lower Sabie has so many roads you can take from it; within 5 minutes you can head onto 6 different roads, from grasslands to the riverine thicket. So for a first timer you get a variety of landscapes / habitats as well as animal spotting. Buy a park map at the gate, but you can have a look at the maps here which include vegetation types: Kruger Park Map | Game Drive Safari in the South East

Towards Tshokwane, look out for herds (e.g. buffalo and plains animals) and cheetah. Lion prides will follow the buffallo as far as they can on their territories. Wild dog have been seen a lot on the H1-3 near Tshokwane recently too. Towards Crocodile Bridge, again cheetah, zebra, giraffe, rhino. Wild dogs near Crocodile Bridge. Leopard are most likely to be spotted along the riverine thicket. Look in the tall leadwood trees and at each stream/river valley along the river banks, as in stop the car and use binos to look around. Lion are everywhere in that area, there have been hunts witnessed from the deck in the last year, and a few prides have got quite big. Look in the Sabie river bed for them lying on the sand banks, but they can be anywhere.