I think Tracy (RoR) just told you all you need to know. I also remove all food and water from all the cats and put it down as I leave with the vet-bound cat. I've done this lots of times without a problem - except for reducing my breakfast to a banana and a cup of tea because they are the only things the ravening hoard won't try to tear out of my hands.

Since I have a few cats who are messy eaters, and I don't vacuum every day, I do a thorough check of the areas near food bowls to check for any dropped kibbles because Murphy's Law dictates that the starving cat that finds the dropped kibbles in the night will be the one who shouldn't eat them.

I always put a cat just back from surgery in their own room because they will weave around all over the place and don't have good control over their movements. They will try to jump onto things, and fall down. Confinement is safest for them and allows them to "sleep it off" in peace. A cosy cat bed in a bathroom would be fine.

As Tracy said, they are not supposed to jump around, but the alternative is to tie them down so I just try to block off anything that is really high or provide a stepping system such as boxes underneath windows.