This is one of the most difficult times of the year for many.
Part of it is the guilt of not attending, part of it is the family and friends being disappointed and part is just missing the ritual.
It has been 4 years now since my last Memorial (sounds like an AA meeting) and it is much easier now.
If I can suggest something that helped me that first year. There was no way in hell anyone was going to get me into another church that year...still too raw after leaving. I remembered the Yearbook accounts of those countries under ban or those in concentration camps and how they celebrated the Memorial.
So I did the same. I read the Bible passages, I prayed...A LOT. I even had the glass of wine there (which quickly disappeared followed by one or two more). That took care of God and that was the most important aspect for me. I knew in my heart that leaving the Org was the right decision. So hold your own observance of the event. It may help.
Fortunately due to the manner in which I left I have not been under a lot of pressure form JW's to attend. I know how hard it has been for others that do get pressured from their family and have guilt trips laid on them. My only suggestion is to get out with other people tonight, or maybe go into chat here or somewhere else. We can get much support from our friends...one's that don't judge us as to where we are tonight.
Tho my beliefs now are far different than 4 years ago, doing the above got me through the first year. I wish all of you well and for some it is already over for another year for others just a few more hours and then the pressure will be off.
Good luck!
Kismet