Explanation: Alliteration and personification
"..The soft,sun-kissed sand" is alliteration. It has the same letter/sound at the beginning of the words. I think alliteration is used to enhance the adjectives (which are being used to enhance the noun).
Another one is personification (The wind is not actually hissing).
It's advocating independence from great Britain to the people in the thirteen colonies
I think its 5 lines and a syllable count of 5, 7, 5, 7, 7,