There is no guarantee that you get placed. However, camps usually have a high demand for camp counselors and look forward to welcoming helpers from all over the world. The sooner you apply for the program the better are your chances to get placed. If you have skills that are especially popular (tennis, golf, swimming, sailing, windsurfing, lifeguard, climbing, high ropes course, zip line, horseback riding, archery, photography, ceramics, jewelry making, woodworking, performing arts, acting, dance, gymnastics) - camps will surely find your application especially attractive. There is a certain point at which camps will stop their recruiting efforts because they have hired all of their counselors for the summer.