Let’s say I set my vulpera make camp to Darkmoon Island before Darkmoon Faire ends. What happens?
Edit: 2/10/20 Experiment complete. Return to Camp did take my vulpera to Darkmoon Faire after the faire ended, but only for the caravan animation. Soon as the animation ended I got spit out to Mulgore. So, now I know, and knowing is half the battle.
I think it ports your character out…
You break the game and it deletes everyone’s characters 
Try it and let us know
My guess? You will be DCd. When you log back in you will be transported out of the DMF like when you log off there and log in out of DMF week.
The best case scenario is that you’ll be there but the dailies won’t.
You won’t be able to ride the rides or get any buffs or anything.
Happened to me once because the system failed to port me away.
I seem to remember getting booted to a graveyard.
That’s how you enter another dimension.
I can almost see this being a possibility.
Same thing that happens if you leave em logged off there after the event ends you appear in your home city.
You port back to find the island was an old god all along.
You get teleported to alt universe where mortis actually loves DHs and im a vegan
Mortis? IN a vegan? Oh my 
Auto correct on a phone is a pain 
My guess is you’ll have to do a rep grind to “unlock” yourself from DMF limbo.
Same thing that happens if you log your character out while they’re still in Darkmoon island. When you log back in, you’ll be forced out anyway
I think that is what happens when a Vulpera gets too old, then you tell your kids that it went off to live on a relatives farm…
You probably get sent to the graveyard over by cross roads or something or you get perma stuck into some kinda limbo where you can’t load in and have to get unstuck
You get to Alterac Valley.
You end up in the physical spot where the dmf is, like the patch of land outside goldshire for the alliance. I’ve logged off in dmf before and that’s where I ended up.