Mellow, welcome to the forum. I will say this: someone here will still be attending these events due to their involvement with family and/or their status within the congregation. Those who feel they must attend can tell you what is going on at assembly talks.
Generally, it's the same-old same-old. There isn't likely to be some new ammunition. I know what you think- that if you know exactly what they heard, you can use it in conversations with your family. But if you have not been going to meetings, anything you say about the assembly will be viewed as overly-critical. In my opinion, it would be just as effective, perhaps more effective, to read up on what's being said and simply ask questions of your parents in the days and weeks following the event. Instead of trying to seem overly-critical, make them think about it themselves with simple questions.
If you strongly feel they are virtually ready to come out and just need some mental pushes, then feel free to ignore my opinion above. Otherwise, understand that it's a long-haul project to help others out, and there's always another Watchtower article or assembly talk at the next event, and the next one after that.
