You see, this morning, the bedframe in our bedroom broke. It was on its way; three of the four casters had already split, and this morning, the leg that still had an unbroken caster buckled. So, to remedy this situation, we took the bed from the front bedroom, the "spare bedroom," and moved it into our bedroom. Once we did that, we also rearranged some, and in the rearranging, decided to keep the front bedroom closed off for now. Since we get, on average, one visit a year that requires the spare bedroom, keeping it a full-time guest room is really an inefficient use of space. We're planning on moving the television system in there, and making it our "entertainment room," possibly getting a fold-out couch in there for that one visit a year. The living room will become the computer/sitting room.
But anyway, as to why the cats will be ticked off. The front room was sort of "their" room. No one else was using it. And now, "their" bed is gone, and the room is closed to them. For one thing, they abused their privileges. It needs a serious top-to-toe cleaning. So now, both bedrooms are closed to the cats, and we closed off the garage, too. This leaves them living room, bathroom, kitchen...and the entire freaking backyard. But I can guarantee, we're going to hear at least one of them crying at the door tonight, trying to get into either the front room or our bedroom. And when that one's not allowed in, he or she (probably she) will take it out on the other three.
And that is why all four cats will be grumpy tomorrow.