>>Are they on a schedule? Or were they meant to be open for a brief period of time?

AFAIK they were only open because of the festival. Traditionally, they were the Necromancer shops that were open during guildfest, except guildfest didn't happen this year.

---

Uzmam! The Chairman will NOT be pleased to know you're trying to build outside of approved zones. I'd hate for you to be charged the taxes needed to have this place re-zoned. Head for the manor if you're feeling creative.