What Kingdom do you reside in? Ask around at your local group. There are bound to be people you know already who are going. Even if no one is going you can always find someone to camp with. One good way to find people to camp with is to ask people in your local group who they know that is going to war. Many SCA groups have households in them. Some households camp together. Some households welcome others to camp with them. Ask around, don’t be shy.