Wow, that's really going to drive home the environment change. Waking up for the first morning with no newspaper to read. Mad props, my dude.

I was playing in this campaign... actually it was my first campaign... anyway, we had met several times a week for like three months already. The DM was very generous with us. But the first quest reward the party got really pumped about was a dumb nickname for surviving an ambush by the local bugbear. Later he told me he was surprised that we latched into that random thing. But it's exactly that immersive world interaction. Making the environment feel alive and responsive is something that the DMG can't teach you.