From what I hear Pleiadians don't drink booze and only eat synthetic meat (if at all), and they will be the first to show up - so you'll likely have to expand your search for a suitable alien to intoxicate. Fortunately the Universe is infinite so you're bound to find some adventurers. If all else fails one of our earthly Secret Space Program humans will be likely to unwind.
p.s. moonshine is legal in my country :)