* what is the relationship between the guest and mariner in the biginning?

Dear Student!

Just as the wedding guest is about to approach the wedding venue, he is accosted by the Old Mariner. This comes as quite a surprise for the guest who is unable to understand the reason why he is being stopped by the mariner. The guest is further taken aback when the mariner holds the guest by his "skinny hand".

Hence, we can say that the relation between the guest and the mariner is not cordial at the beginning.

Hope this answers your question.

Best wishes!