FWIW. we did not go as a group to the Green Vault when I was on this trip last April. The PDs gave individual tickets to everyone who wanted to go and there was shuttle service during the afternoon if we wanted to use it. I hope all of your plans work out for you and that you have good weather. If Constantin Galiuc is the hotel manager on the boat, tell him hello from Janice. There were three of us who did not go to Berlin and he invited us to have lunch with him in the dining room.