It will swap each time someone lands on an Event Space. The star, shown on the left above, will swap with the Bowser space on the right when a player lands on an Event Space, activating Cheep Chomp's Trick. Yoshi's Tropical Island is a 1-Star Difficulty board originally from Mario Party.Watermelon Island is on the left, while Cantaloupe Island is on the right." "A pair of Yoshi-shaped islands brimming with fruit.
Keep in mind Horror Land would be a poor choice for someone's first Mario Party game, especially if they're not familiar with board games or video games. The rest of the boards rely on things largely out of your control. Those who want to strategize board movement, item use, and more, and would like to entirely rely on their own strategy, would have the most fun on Horror Land.
This makes it easy for those who have never played a Mario Party game, or many board games, to pick up on it.