Technically you can't and friends told me a lot of hoops to jump through so most of the locals just set up as and when especially by the road side. Just pack up and go if anyone comes and bother you. If you are really keen though, doesn't hurt to check with the local town council (MBJB) just in case.
http://webcache.googleusercontent.c...-move-from-lucrative-spot+&cd=2&hl=en&ct=clnk
That why I say use a mini van. Normal day can use as private car, evening, sell drinks from the boot. If MBJB come along or if it rains, close up and drive home. No need to worry.