Correctly punctuate and capitalize the following letter. to whom it may concern in regards to the memorial day fiasco aboard your cruise ship star princess we would first like to offer our sincere apology for our part in the mishap while we do not plan on taking legal action against you or the moroccan authorities we are requesting an apology in english this time from both parties to avoid another waterloo captain johnson may just want to remember a few key items

The corrections are in bold fonts.

To whom it may concern;

 In regards to the Memorial Day fiasco, while you are aboard your cruise ship Star Princess. We would first like to offer our sincere apology for our part in the mishap. We do not plan on taking legal action against you or the Moroccan authorities, we are requesting an apology in English, this time from both parties to avoid another Waterloo. Captain Johnson may just want to remember a few key items.

the first step is to convey the appropriate emotions.

the sentence that avoid faulty coordination is:

culture, which is well represented in philadelphia, plays a major role including theatre, music, and the visual arts.  

faulty coordination occurs when the writer gives equal importance two different ideas (clauses) which in fact are not equivalent. in order to correct a misplaced clause or idea, the writer can place less important or emphatic ideas in a relative clause as in the previous sentence.