Yes, my anniversary (22nd) is this Thursday, so I know the challenge of what you are facing with the anniversary. For me, my W and are separated 15 months so the only thing I am doing is sending her a card. I purposely found an activity for the night (cooking class) to occupy myself, without her.
I do not know if this would be helpful for you though. If you were already detached in your marriage, perhaps scheduling something that your W would really enjoy is a good idea. But given that your W is in an EA, and possibly MLC, perhaps the best thing is to detach, give her space, and make the day just like any other day. A simple card and nothing more. Good luck.
