Happy 500 posts, Chris!
I'm starting to get a little concerned. He's going to be in hospital for quite a stay, from the looks of it. I suppose they won't rush him out, but I've seen heart attack patients go home after three days here in the U.S., and people with major surgeries leaving after 5. Also concerning are the 20-25 minute visits, and Will without Kate. This suggests to me he's in ICU with these short visits with small amounts of people, or he's feeling very poorly. He's not just in as a precaution. People in as a precaution are bored silly.
I read in the Daily Mail that they are hoping he will be at some garden party on Tuesday and in the Midlands with the Queen on Wednesday - I would hope not, even if he is much better and this is just a bladder infection.