So I've been there a few times already and it's just ok. Some of the staffing there is not too familiar with Harry Potter. The drinks are pretty good, but are always running out of butterbrew and I don't think it's worth the 30+ minute wait. If you want to go there for the pastries, don't go there when it opens. The company they go through for their pastries is not opened at that time and they won't be there to make their delivery until after 7:30am. I have also noticed that when you walk in when it opens, they're not really prepared. They're still setting up the menus, register, equipment and their nitrogen coffee was not even setup yet. I think they may have opened a little too early and it looks like they didn't learn too much from the soft opening.
I love to support local businesses, but it looks like they need to clean it up a bit. I will try again in about a month and see if there has been any changes. It's interesting to see how they will do once Starbucks opens up in the same shopping center.