Welcome to the forum and thank you for your first post.
If your interested in saunas, go to the reports section and in the
stickys there's a thread Saunas - what you really want to know
you'll find a whole range of info on saunas there.
If you're worried about the first time I suggest you go to the more established
saunas first to get some first hand experience, before venturing to the less known
places.
As for the difference between 141 walk ups and saunas, you need to spand more time
in saunas - allow for at least 2.5 - 3 hours there while for 141's 1 hour will be sufficient.
Over to you Josh, what do you think kenpachi should do ?
No matter which way you go, you WILL have a good time !
Keep us posted with your activities !