You can expect to hear a very dry, rushed, impersonal talk that will twist and turn on various abstruse points about sheep and classes and anointed and great crowd etc etc, and not much at all about Jesus as a person and what happened on the day he died.
The whole thing is simply a glorified Sunday public talk, punctuated by strange silent pauses as the wine and bread are passed around.
The only good points are it is a short meeting, the anticipation of the wine and bread coming your way and the enticing smell of the wine, and the opportunity to perhaps spot some old faces from the past that make the token effort to go along once a year and to check out the new faces of visiting bible students or others that have been persuaded to attend that normally don't.