Well, just to add to what these guys said...
An SSN is a pretty small ship. You're talking 120 or so guys, and that's it. You can get into places a CVN can't, and the locals might barely notice the increase in population (with the exception of a few places that have very small populations).
So basically, you can hit a bar without it being overcrowded with squids. You can also see real sights without every seaman schmuckatelli getting into your way, whether it's a temple in Japan or some creepy guy wrestling a crocodile in Australia.
The Pacific ocean is sort of a backwater place, as withroaj alluded to. Aside from Japan, Australia, and New Zealand, most of east Asia, Micronesia, and Oceana are underdeveloped. You will find things in places like Thailand or Maylasia that you normally only read about in a National Geographic...whether it's foods, cultural habits, or societal moral differences. Certain laws and behaviors that are taboo in Western society are the norms in some of these places. Just about all of the "bad" things attributed to sailors comes from serving in the Pacific. It's the place where all the "sea stories" come from. But, if you are into seeing and doing things that few ever can, it's a good way to go.
And yes, all the stories about Australia are either true, or only slightly exaggerated.
