Coleridge uses the wedding as a setting for the beginning of the poem. This is a place where the Ancient Mariner would stand out and for the wedding guests to be introduced to the readers.
There is not much description about the setting which signals that a ballad form is being used in the poem.
When the Ancient Mariner starts his story, he describes the departure of the ship in a cheerful way. The quotation “merrily did we drop” does make the readers assume that the ship was a happy setting.
The sun does add to the setting, “the sun came up upon the left, out of the sun came he!” The way that the sun is personified does make the mood cheerful and calm.
The setting then changes suddenly after the storm where there was…