I've gotten two tattoos since I stopped drinking. Both are personal to me, and indicate taking a stand, not succumbing to negativity. Very much sobriety tattoos for me, but also relative to other things.
Like M-bob, I would not get a date or something tattooed. Not my style, but, also, this isn't about August 11, 2016 for me. It's about gratitude, vida, accountability, positivity, God as I understand it, etc.
-B