The time of departure for the caravan was actually very early in the morning equivalent to EARTH's 3 am. The reason for that was once again secrecy. They were also not using any of the normal city gates. The Merchant's Guild had used a favour the Margrave family owed them to request a secret passage out of the city.
From all these preparations it was evident that the goods were really very valuable. Not only that but all the carriages that were part of the caravan were actually camouflages. The real goods were divided inside two storage rings. Three of the guild employees were going to follow the caravan acting as members and they would be in charge of the rings.