Nope. Hogs Head Ale is the same thing as Safari Amber that Disney claims is exclusive to AK although that isn't even true. Below is taken from Party in the Parks website:
Did you know that Safari Amber is specially brewed just for Disney? And did you also know this exact same beer is served by several other Anheuser-Busch retailers who also say it's specially brewed for them? Good catch by Kathleen, this is that same red amber beer AB tells just about everyone to claim as their very own micro-brew including Darden (Olive Garden, Red Lobster etc) and most recently Harry Potter at IOA. It's also always quoted as exclusively available at Animal Kingdom & the AK Lodge, but you can actually find it sold as this Safari Amber at the Refreshment Outpost in the Africa section of World Showcase in Epcot as well.