i'm always glad to help anyone that can't find an answer to their question.
i tried all my sources and nothing showed up so knew i had to call guest services.
was thinking though, if you wanted a butterbeer in the early entry time period, who is to stop you from going in the LC and just ordering a butterbeer or pumpkin fizz?
now i don't know if reservations are required for that one hour EE time period, so that could be the only catch involved.