Can you stay overnight at Cumberland Island?

I'm curious, is it possible to spend the night on Cumberland Island? I've heard it's a beautiful and secluded spot, but I'm not sure if accommodations are available. Are there any campgrounds or lodges where visitors can stay overnight? Additionally, are there any restrictions or permits required for staying overnight on the island? I'd love to know more about the options and requirements for spending a night on this picturesque island.