With the Frequent Traveler lifestyle, when your sim is visiting another world and meets a local there, they can ask the local about their home region. There's a special notification that pops up, with Snowy Escape and all previous worlds (except Magnolia Promenade) having a special text telling about the features of the world. Onlyabidoang showcases these all in this video.
However, there are two he didn't show: one he explained and the other he missed.
These are Batuu and Realm of Magic.
Yup, despite the interaction not showing up there, Batuu does have a special text for this interaction. It is the following:
Oh, welcome to Batuu! Currently, as you can see, Batuu is under the protection of the First Order. You can find out more about the First Order in the... First Order District. Mostly, you'll be spending time in the central hub though, at Black Spire Outpost. There's Oga's Cantina, Dok-Ondar's Den of Antiquities. Lot's to do and to eat. And hey, you didn't hear it from me, but some fishy things have been going on deep in the forest.
But also, it turns out that despite technically being part of Glimmerbrook, Realm of Magic has a special notification separate from Glimmerbrook. This can be seen in-game when asking it there. It says the following (under spoilers to give you a chance to go in-game to find out):
Ah, so you have discovered the Magic Realm, traveler. Few can say as much. I dare not reveal all the realm's secrets, but there are a few notes of interest that might help you along your patch.
Seek out any of the three Sages within the Magic Headquarters to begin a magical journey. It is the balance of the three houses which keeps our realm together, otherwise we'd be torn apart by the vortex. On the outskirts of the main platform are various portals that you can explore. One portal leads to Casters Alley, which is a magical marketplace. Another to the dueling grounds, while the third leads to our gardens. That is all I will say.
It's fun to see that the lore of Realm of Magic is showcased there, as otherwise the only other part for it as I know is from the Realm of Magic developer livestream.
It was great to read the information that you posted about the Frequent Traveler lifestyle and the notifications that pop up @EgonVM 🙂 Thanks for posting about it and the Batuu and Realm of Magic notifications that appear as a result of it.