This here is Fluff Fields.

Everyone gets one venture into Fluff Fields for free. They may find a FluffBun, BunBucks, TransFusion Token (referred to as a Custom Token), or other items! After one's first trip into the field, another trip costs 10 BunBucks.
Disclaimer: not everyone gets a FluffBun on each trip to Fluff Fields. I randomize who gets what, so don't hate on me if you don't get what you want. This results in a ban.Oh! Don't forget your FluffBun Net! You didn't think it would be easy to catch a FluffBun with your bear hands, did you?
FluffBun Cloud Kingdom:

The Queen of the Clouds seems very nice! She will let every FluffBun owner (and non-owners) enter the Cloud Kingdom once for free, whether they have already entered Fluff Fields for free or not. After that, every trip is 15 BB.
Beware! Anyone found exploring this place before the opening date (January 3rd, possibly sooner) will receive consequences from the Queen of the Clouds!