I searched for answers to this on the site, but no one is asking the same thing exactly. When you have multiple introductory phrases, prepositional phrases per se, do you have to use a comma to separate them? For example,
"In the morning, with a fast pace, I will get up." "Under table, in the little compartment, there is a key."
Part of me says yes, that you have to have the comma, but if these occur at the end of the sentence, I don't think you have to. So I am trying to figure out the reasoning here.
"I will get up in the morning with a fast pace." "There is a key under the table in the little compartment."