Actually it's the other way around, we went from IF to IC.
When I found out where our cabin was located, that's the first thing I thought about, but we live in an apartment with neighbors on both sides and on top of us, so we're kind of used to it.
We are planning to contact our travel agent about 2 weeks before the cruise to see if there's an upgrade or cabin switch possibility. On our first cruise I had a conversation with one of the ship officers, and he advised to do that, call few days before to see if we can get an upgrade.
On the bright side, we're around the corner from the buffet, haha.