We just flew 3 people JFK-KEF in economy comfort and they put us in the row 6 Saga seats but with EC service - they had apparently moved the Saga bulkhead up one row. The row immediately behind us had the little tray in the middle seat, but it looked narrower than the one in the promo pic. EC service vs. Saga made no difference, as it was an overnight flight and we all just slept. I have the impression that they're very flexible about how many of what class they'll sell for any flight and will reconfigure as needed.