The tone is set by the chatty, lighthearted style. I enjoyed this hugely - it's funny, with some bizarre twists and turns. A word of caution though - it might cause you to laugh out loud!
We walked out on to the main floor. I kept my hands resting on top of the envelopes in my pockets, fearful they'd drop out and instantly vanish. It reminded me of the way a gunslinger might move. If he were cautiously making his way past shelves of geography textbooks. With envelopes instead of guns. Intent on looking like an idiot.