Remember how the elders were told by the GB in magazines "NOT to be spiritual policemen"?
Yep, well, when it comes to rounding up those who don't want to attend, they become SWAT team policemen!
Always remember that "less is more". The LESS you say, the MORE effective you will be. This is a simple and good line to say "Thankyou, but because I value Truth and Honesty, my conscience will not allow me to attend at the moment. I trust that you will respect this, and respect appropriate boundaries. Take care"
Then say no more when they push. If necessary, simply repeat that line over and over mildly.