Gary, I used to have video footage of family members falling asleep at the conventions. It was hilarious!
The general "mood" at the meetings, at least in the spanish congregations, is that of keeping the "right" behavior so one won't get D/F. Of course, there are still occasional slips (such as a wife sleeping with a "brother" who is not her husband), but for the most part everyone is brain dead. Doctrine seems to be the last thing on most JW's these days. Gone are the days when the WT would release a new date or at least a hint that the end might be near.
It seems that they are very content being in the "one true religion" (HA!) even though they may not understand what 1914 or 1919 really mean.
The WT is doing very well in concealing most of their true doctrines (Jesus not the mediator for all, old prophecies, etc.), and I believe this accounts for the growth that they're still experiencing.