The Megabonus ended April 30th, and most here likely were expecting credit for their stay at the SEA Marriott, in order to get the right credits for the Megabonus. My stay did not credit and I have spoken to both Marriott Rewards and accounting at the hotel. Since we were booked at a Group rate - the hotel considers this a situation where the Group is paying for all rooms - not individuals - even though we each paid separately. I suspose the presenters had their room paid from the Group - hence the reason for the hold up. The hotel has to reconcile the stays at the group rate to release them to Marriott rewards, even though we paid separately. The hotel accounting says this is a glitch in the system. The net is - they should be releasing our rooms from hotel system later this week. But you may have to call Marriott Rewards if they already cleared your Megabonus, which ended April 30th. The hotel accountant indicated others have been calling as well.