You may well get a lot coming back here, but to simply try and answer your questions...
1...Depends on the land .... Generally ..maybe..but you end up with a different set of problems!!
2...Almost always..but you still need to find the right time of night!!
3...No, but hardly ever do in the daytime either for bunnys!!
One thing I would add, even though you have not asked.....don't even think about going lamping on land you don't already know well from daytime shooting!!
thanks i plan on using my parents farm for a couple of months while i get used to lamping then move on