bonjour
5/
Such camps shouldn't cost you a lot of money except probably the trip. I'm not so sure they will pay for the flight. It's going to need from you personal investment as your time, your strength. You are going to work 30 hours per week in difficult conditions. Your life is going to be extremely simple in terms of comfort . You'll probably be stenous, but you'll have fun , you're going to learn so much from other people that it's worth it.
6/
I think , if you really want to, if you allow you not to have time, but to choose to take your time, yes, it's possible.
When you're travelling you can always stop somewhere where you'll be useful . It may last a day or so, it may last much longer.It depends how you feel, who you met, how people got connected to you. Life is strange but such an opportunity can't be missed
bonne soirée :)
