I booked two J award tickets for my in-laws. On their return they were delayed more than two hours leaving AMS, which resulted in missing their connection at ORD. They aren't frequent flyers, so they don't really know the rebooking drill, and the agent booked them into non-direct flights in Y, ultimately arriving over six hours after originally scheduled (and in Y).

I wrote to Delta and they responded with a form letter apologizing for the delay, and offering a $250 voucher for each of them.

It seems like this is consistent with what others have received for delays, so my question for the collective wisdom is do I continue to pursue the issue of the involuntary downgrade or let it stand?