Just a thought:
Since there's a quick link in the sidebar events tab to doing things like dancing, going to the Pumpkin Patch, etc... but the Trick or Treat one remains just an event with no link, perhaps it could be changed to something like "You can trick or treat again! Click here ("Click here" would be the link, not the whole event) to have a random one." That way, if someone's trick or treating with someone else specifically, that remains an option but if you just want to continue to get the numbers for achievements, you can just click and go.
I've lost a couple events because my dumb brain is just not registering that yes, I can trick or treat again because it looks different from the other events with links in them.

What I did is put the person's tot link on my notepad and click on that link whenever I got the alert I can tot again lol But I never do random tot
I'm not a fan of events in general but I support this improvement because I know a lot of us use them.