I seem to have a few minutes of Internet access tonight.
Regarding the hostility of the dock workers, it is indeterminate to the group's insight. With that in mind, please specify if Ariellana is running or using the standard movement.
There are ropes where Morgran and Myn are heading, but they are mostly in use. There may be some extra on the ground, but it is hard to tell due to the intervening crowd and remaining cargo.
In the hypothetical situation where Ariellana had to grab extra gear, it would have taken at least a movement action. For multiple, loose items, possibly a full turn or longer would be required.
Good points concerning the dragonborn's condition. I will add one item that can be observed: it is not wearing any armor, only light robes.