The "Wizard's Tea" events are being held twice weekly, with an ogre-sized array of Potter-themed foods like chocolate frogs, mandrake cakes, Aunt Petunia's trifles, and obviously the aforementioned piping-hot butterbeer (it's not a party without butterbeer, guys).
If you find yourself compelled to head out to South Wales to live out your childhood (or current... don't be ashamed) Potter fantasy, you can book a slot here. Upon arrival, they'll even sort you into a house. Just pray you don't end up in Slytherin. Or with those Hufflepuff goody two-shoes. Or those snooty Ravenclaws, too. Actually, why does anyone want to be in a house other than Gryffindor in the first place? On second thought, I don't care.