Having never been a JW I know my opinion on this is very minor, however I have sat through some boring church meetings (yeah, I know, like that's the same).
If I were you, and you like'd lobster that much, go ahead and go...do a little spying (and intimidating) to make it interesting. The very second the last "Amen" is sounded, lean over to your parents and say..."Ok, I kept my part of the deal, now how about that lobster?" You can then use the car ride over to the restaurant to bring up some interesting questions about JW's to stir their minds.
(Just a thought)