First of all, you won't bonk because you haven't ridden much. Bonking has nothing to do with the quantity of training you've done. You may, however, bonk if you don't eat enough while riding. Bonking is simply low blood sugar. Bring snacks, stop for lunch at interesting-looking cafes, and you'll be fine.

Secondly, it's 4 days in a populated area ... no different than your normal weekend ride ... right?