Spoiler

Despite their best efforts to teach her a lesson, she's going to be a stubborn brat and she won't be forced into leaving. You can almost hear her agent whispering in her ear, "You can't leave yet, honey, you're still the star of this episode!" If TPTB ever wanted her to really leave, they'd just have the cameramen ignore her, like they ignore at least twenty of the other kids.
Meanwhile, the council is united in giving DK the gold star, but DK is ready to leave! And Guylan is depressed that he flunked Hole Digging 101 (where was AnnieCamaro when he needed her?) but he redeems himself as a leader by convincing DK to stay! Pointedly not mentioning, on camera at least, that DK will have 20,000 reasons to be glad of staying in the next five minutes.
And, oh, that Pork & Beans Challenge!

Great irony there, in setting up an environmental theme, then wasting 1600 gallons of baked beans for that. How many starving people could that have fed? And then the kids make the "right" choice yet again, for fresh fruit and veggies over the fun but evil dune buggies. (With Taylor suddenly switching roles and rooting for the buggies. Deal with it, Taylor.)
But, in the whole sanitation theme, how did the kids clean up after that? One of the laborer jobs is supposedly doing laundry, but we've never had a scene of an old scrub board and clotheslines to go with the scenes of dish washing and outhouse mopping. Are they cheating and using modern washer/driers off-screen? Presumably along with some unseen baths and showers to get the kids scrubbed clean?