Well, no one brought food (though 3 brought wine), no one complained about the bathroom (and I stayed quiet), we didn't have a lull in which to pull out games, and the whole thing turned out all right. The last four people stayed till after midnight, when BF and I had already been making signs that we were exhausted (we were in the kitchen doing dishes, had turned out all but the living room lights and put away spare chairs) for a half hour. The cat was fabulous.
All in all, the food was great and the company was good.
OK, my mocha cat cake did kind of look like a 4-year-old decorated it, but it tasted great: