Can you check if these grammar constructions are good?

1) Noisy as a pack of dogs, my neighbours move off to Valparaiso at night.

2) The children got out the school happy about the end of the season.
    I don't remember if a comma is required. Do you know it?. This is and adjectival phrase (I think)

3) Charles, rich as a businessman and glamorous as an actor, couldn't catch his beloved's attention.
    Is the appositive correct?

4) We got in the stadium ignoring the check-points.
    Ignoring explains an action happening at the same time. is it the ing- clause good?
    It suggests that they could've paid for the ticket but ignored the check points.

5) We got in the stadium by ignoring the check points.
   The method they used to enter the stadium was ignoring the check points. (is the prep. phrase ok?)
    if you write a comma before "ignoring" it still carries the same meaning as with "by"

6) With a pair of earplugs and a mp3 player, a person could get deaf in six months.
   I know one can change the Prep.Phrase order depending on the emphasis you're giving to the sentence. :D
   but is this correct?

7) Maria made very bad decisions afraid of what was gonna happen.
   Could you explain these constructions?. I'm not sure if they're correct.

Ufff, I hard a really hard time studying this. Hope it's fine. DON'T doubt to correct me if i'm wrong.

Thanks in advance!

au revoir