Well, the visit is over. I was bemused by the extremely negative reaction I got here (I expect to get disagreement, but I didn't expect to get accused of running a bait and switch
It went fine, after the initial morning. I was angry because my guest cancelled our plans (for him to text me when he was arriving and have me pick him up at a set location, in exchange for having someone else pick him up, take him to a restaurant, and then take him to my house whenever they finished brunch). Some people felt that I was being unreasonable over that, when it would have involved me canceling other longstanding plans involving another person in order instead to spend the morning waiting at my house for whenever my houseguest decided to show up. It was said that he was doing me a favor and giving me extra time, when that was not the case. Thankfully he did cancel those plans, so I was able to get what I needed to do done.
I got other catsitters. All cats were sat satisfactorily, by people who professed being happy to do it.
I was, actually, the only person who offered to house this friend (I said that earlier in the thread, but for some reason, people were disputing it). I know that because my guest told me so. He said if it weren't for me, he wouldn't have been able to attend this conference.
The timing was poor for me, but I was glad to help him out, although things got off to a rough start. The guest also managed to annoy my husband at the beginning of the stay, and my husband is one of the world's most difficult people to annoy (unlike his tetchy wife). But in the end, the old friend got to go to his conference, he stayed here for free, no harsh words were exchanged, and we went off on our trip (we left before the houseguest did). At no point did the guest do any cat-related things.