landing at 4S you will make a walk to the border control in 4S to enter the country. it is all uni-directional so everyone is fed the same route. queues are variable as usual. after border control entry you will be funneled downstairs to the train which will take you to 4. once in 4 you just have to really pay attention to the signs, i find the signage at that airport incredibly confusing after all these years, and generally takes me a try or two to find the entrance to the lounge. there is nothing intuitive to me about that terminal except for the gate layout of 4.