I was in the same boat a few weeks ago. I went with Glenmorangie. It’s a highland Scotch, available in a bunch of ages. I was gonna go with 12-year, but the local packy was out, so went with 18, which is somewhat out of your price range, but went over really well.
Highland Scotches are pretty clean-tasting, good for warmer weather. If your friend is into peaty/earthy Scotches, you’ll want to get something from Islay like Laphroaig. (My bud waxes eloquent about Scotch, especially after he’s had a couple.) I drink tea and beer almost exclusively. The occasional coffee, of if none of the above are available, water.