Roy, commiserations but congratulations.
I'm sorry you can't make it, also sorry I can't get to these events, but you've made the smart move, mate. You are dead right that you'd be more easily fatuiged and a possible danger to yourself and possibly others if you went. Riding bikes is already a high risk activity, adding recent illness and surgery to the mix definitely worsens the odds, not to mention that like most of us you're a gentleman "of a certain age", not a young buck in his teens who bounces back much more quickly than us.
One of the real killers of older, more mature men is this expectation we have that we can still do everything physical as capably as we did when we were thirty years younger. Climb up on roofs to fix stuff, fang around on bikes, drink and get rowdy, etc. etc. The roofs thing is deadly, btw. I don't know how many older blokes I've seen in ICU's with life threatening injuries from falling off roofs or ladders, but it's been many over the years. Always men, women are smart and pay someone else to do it. At our age and weight it can only take an unexpected fall of a meter or two to do it, believe it or not, because the human skeletal structure progressively weakens from around twenty y.o. by about one per cent annually, so a fall from a real height of one story onto an unyielding surface like concrete is commonly fatal on the spot. The only good thing about falling off bikes by comparison is it's not a long drop, and some of the energy is absorbed in the the slide. Plus we're wearing the gear (usually), that's a major plus.
You've got a device called a PICC line in place, a Peripherally Inserted Central Catheter. Very useful for long term administration of IV meds like the antibiotic you're on, and means you can go home from hospital earlier and continue the treatment there. We see a lot of them. If you can, give it a flush each eight hours or so with some sterile saline, you should be able to get some from a pharmacy along with disposable syringes. PICC's have a very narrow passageway for the liquid drug you inject, called a lumen, and this lumen is so small, probably only half a mm in diameter, that they clot off very easily unless flushed every now and again. Which is a preventable nuisance, as it may mean it has to be removed and another inserted, so more delay in treatment, hassle and expense. Just a tip.
Best wishes with the rest of your recovery, Roy. I'll be praying for you today. You've done the smart thing, again commiserations but congratulations. And btw, I recently scored a black body canoe to go with the black X tank cover you sold me, so I'm most of the way to achieving my goal of an alternate change of clothes for my orange '10 non X. Now I'm considering respraying both pieces, but what colour?...decisions, decisions...