I apologize for the delay in feedback on your question about the Wild Card.
I think the best will be if you calculate the costs of the daily conservation fees that you have to pay and see if it will be more of less than the cost of a Wild Card.
We make use of a Wild Card and for us it is worthwhile, but we can use at different parks that we might be visiting in a year until it is time for renewal again.
I know that there is an International Wild Card available, but I am not sure what the costs are for those and if you will be able to use it again once you are back in your own country.
I think by the time you get to the Kruger, the grasses would be less dense as winter is approaching us now and therefore I think you will be able to see more than we saw in the time that we have been there. I also do not know of any heavy rains that fell in the park since we have been there so I am sure the animals will move towards the dams again when they are thirsty.
I hope you have a great time and that you will come back with great images.
Cheetah (46) *