First of all, we are legally not allowed to stay in night at fort, due to some myths, but even if you somehow manage to do so, no wild animals activity have been seen there. So it is safe for that reason. As reserve is not so close from there. and percentage of your encounter with wild animals is very low. but still i am repeating legally it is not allowed to stay at night, but people Everytime, somehow manage to stay at there in night for a thrill.