Dear Andy. Pioneers Camp has a camping site but also chalets that they sell like a hotel. So it is really two different products.
Sindabezi is the sister lodge of Tongabezi and it is indeed on a very small island in the Zambezi River. It has only 5 rooms and the little island is only the lodge. I hope this makes more sense now? I have been in both places, so if you have more questions, please let me know. Marjolein