The one with the biggest sweet tooth would definitely be Korey, being able to indulge himself on all but the very best that his celebrity status can afford, he very often is seen eating something sweet, cakes, treats, pies, pastries etc. If it's sweet, he craves it.

As for ones that dislike chocolate, Thembi isn't the biggest fan of it, and avoids it unless there's absolutely no other alternative. She finds chocolate too sickeningly sweet.