Okay, one last thing for real actually this time. Thanks for reminding me about this, wiki page.
If the conditions for Mari Is Here are met, the Faraway Park swing set will also appear here. If you wait for an amount of time, Sunny and Aubrey will briefly appear on their respective swing for less than a second. I obviously don't have reaction perfect screenshotting speed, so I had to take this screencap non-standardly so it's a little less quality.
It's kind of cute? But it's also depressing seeing them down here. The swings meant a lot to Sunny and Aubrey. I like to think this shows that some part of Sunny, even buried as deep as this, didn't really give up on Aubrey. She still means something to him. But considering the path he's on at this point, it's just a fleeting thought that's going to die down here.