I'm a newbie, haven't read where you are going yet, but I'd suggest to take a tent, then if you feel the situation arises you can do without it, try it a night and see how it goes.
Besides the bug-fest that could occur ( I hate bug bites on my eyelids! ) I think having a tent is also nice to store things out-of-sight, out-of-temptation for the odd slightly-evil person that just might steal a thing or two. Besides, the beauty of being in a tent is THEY don't know what YOU have in the tent either.. you might be packing a nice big knife