@Pirate - You know not of which you speak, So don't provide advice that is ridiculous.
To the OP - The CG is worldwide. There are Coasties currently serving in Afghanistan, Iraq & Bahrain. There are Coasties stationed in Saipan, Guam and Rotterdam. We are all over the coasts and Alaska and Hawaii. We are also on the Great Lakes and the rivers and a few other lakes as well. You will have ample time to see the world. You will need to take the ASVAB again, they are only good for 2 years. You want to get the best possible score. 99 is the best you can get... aim for that. The CG has always been more selective because they are small and they can afford to be. You will be given far more opportunities as a junior enlisted than if you were to go into the Navy. If you want to actually speak to real Coasties and not people like Pirate that have no clue what they are talking about... WWW.USCG.ORG That is a forum of active duty Coast Guardsman, including recruiters. They will be happy to answer your questions honestly.
It is a very good, rewarding life. I wish you the best of luck.