I too, have noticed a lot of ex-JWs that will never go to a meeting - but when the Memorial rolls around, they're right there.
I think that people who do that need to re-think something. The JWs are a bit... well, controlling.
I get chills thinking about someday, times will get pretty rough for the WTBTS and they will hold this 'memorial' service. There will be an announcement from the platform that EVERYone will partake of the 'emblems' this time. There will be big burly 'attendants' posted at the doors to prevent anyone from leaving.
Since they all have been pre-conditioned to 'accept' any instructions from their 'governing body', as 'food at the proper time', they will - for the most part, all go along with it. After all... it IS 'new light'.
Of course, you only need to remember a place called Jonestown, and a man named Jim Jones to envision the outcome of such a memorial.
A scary thought.
If anyone reading this still attends the annual memorial service, they seriously need to think about that.
Regards,
Jim TX