I just need a scenery, but can you only enter if you pay money to get the gems to get the scenery? Or is there an easier way to get gems I don't know about?
If you are lucky you can find gem in exploration, but if you really need a background now for the bal you can ask player to let you borrow one since it's possible to trade them. (you can ask on this topic https://gothicat-world.com/forum/viewtopic.php?f=40&t=18401)