Depending on the edition of Disney Dreamlight Valley and the platform you purchase it on, it may limit your options to purchase additional editions. Please see below for more information:

Nintendo Switch™
While purchasing the Disney Dreamlight Valley base game will allow you to purchase all other editions, purchasing the following editions will limit your purchase options:

Disney Dreamlight Valley: A Rift in Time 
After purchase, only the following options will be available:
•    Disney Dreamlight Valley: The Storybook Vale
•    Disney Dreamlight Valley: The Storybook Vale – Magical Edition

Disney Dreamlight Valley: The Storybook Vale, Disney Dreamlight Valley: The Storybook Vale Bundle, Disney Dreamlight Valley: The Storybook Vale – Magical Edition
After purchasing any of these options, only the following will be available:
•    Disney Dreamlight Valley: A Rift in Time

Disney Dreamlight Valley – Enchanted Edition 
After purchase, no additional existing options will be available.