We put up five yurts from End of may til October. They put away to keep them tip top, they are very popular. We don't do the high end glamping thing but more of a half way house between that and camping. Lightly dressed, so visitors have plenty of space for they're own stuff. We have a five year old shower block, still looks mint, we have many compliments about it.
Insurance a must, be ten steps ahead of your visitors, think as a visitor when setting up surroundings, maybe get a friend to do practice run, to see what works best. Also many people decide on a site depending on the shower/toilet facilities.
Lastly, if any animals graze on same land, they have to be off for at least six weeks prior to human usage, because of Coliforms sp? E coli risk.
Look into air bnb. Really simple back end for booking and they only take £2 per booking!
Good luck, its a great experience, ive met people from all over the world because of it, and made some friends too.