I think that the only times they might ask you for your key is if it is a high peak season time. I don't do it mostly because it's not worth the effort. But, I also don't think it's the "big crime" or moral issue that some want to make it out to be. Also, as much as Disney is charging for the cabins and even camp sites, they should redo the pool. Every other resort has a themed pool, slides etc. Not saying that just because the pool is bad, that it is ok to pool hop. But, perhaps if there was a decent pool at FW, then people wouldn't be tempted.