Address is 224 Main St
Vista, CA 92081
(760) 643-1619

Below is link to a Yelp page with map. For some reason, this location doesn't show up on the corporate Hennessey's website but James MacMillan has dropped by to confirm that it's still there and they're ready for us!

http://www.yelp.com/biz/hennesseys-tavern-vista