30 minutes? Seriously... there's great terrain right off the road in Emerald Bay. Dick's peak was a little deeper, but there's plenty of people who do it in a day. You're into the "playground" zone just a few miles in. And of course... there's Tallac.
"After the first glass, you see things as you wish they were. After the second, you see things as they are not. Finally, you see things as they really are, which is the most horrible thing in the world."
--Oscar Wilde on Absinthe