I like to sit in the bathtub until the water is gone or mostly gone anyways. Always have since I was a kid. You'd be surprised with just a small amount of water in the tub it'll still keep ya warm :) I say buy the tub if you can afford it. Make your life easier and more comfortable. You only have one life so why not enjoy it and make the best of it? :) if you do your research on them you should be fine