A check of the database reveals only one active license for Busch Gardens: The Festhause
http://www.abc.virginia.gov/licenseeSearch/jsp/controller.jsp?task=licenseedata&license=28730
Interestingly, it is an ON and OFF license, meaning they can sell beer and folks can leave the premises with that beer and walk around. That would suggest to me that the Festhause has a limited on-premises consumption area, most likely the interior of the hall itself. That would be the only place one might legally be required to OC.
I looked on the website and couldn't find any policies concerning weapons. I've sent them an e-mail asking for a copy of all park policies/rules. We'll see if they respond.
According to some news reports about the Florida law concerning allowing guns in personal vehicles at work, Anheuser Busch is pro-2A:
"
Busch Gardens Africa in Tampa and three parks owned by Anheuser-Busch Cos. at Sea World in Orlando are complying with the new law "because we support the Second Amendment and private rights," said Busch spokesman Gerard Hoeppner."
source:
http://www.tampabay.com/news/article659828.ece?comments=legacy
I'll also ask the ABC SAC who answered the Wegman's/Dulles TC questions for me about the premises issue.