According to the TV Tropes page for Fantasy Island, the 1977–84 version of the show had a spinoff aimed at children.
Spin-Off: For a few weeks ABC tried a Children's version of "Fantasy Island" aired in the 'Family Hour' of Sunday @ 7pm Est time slot. The only differences between it and the 'Saturday @ 10pm' version were that kids had requested the fantasies, and they arrived and departed via Hot Air balloon instead of De Plane. These episodes were syndicated with the parent show.
However, I can't find anything to corroborate that this show actually existed. The Wikipedia page for the show doesn't mention a spinoff, nor do the episode descriptions seem to imply that any were aimed at children.
Is there any proof that Fantasy Island had a spinoff aimed at children? Or is this something that an imaginative TV Troper invented?