Here's some more E-2 info in case you wanted to know, asm. After you finish VAW-120, which has been pretty well covered, there are three main locations for Hawkeye aviators - Norfolk, VA; Pt Mugu, CA and Atsugi, Japan.
Norfolk is (I'm pretty sure) the biggest US Naval Base in the country. There are several other bases in the area which makes it a big military hub. There are lots of Navy type resources available to you while you're stationed there. On the flip side, traffic is pretty bad and the city is less military friendly than you would hope for.
I can't speak to Pt Mugu, but it's near Santa Barbara and I hear it's beautiful.
Japan is cool if you're looking to live outside the US.
The base is small, but it has all the basics and a little more. In addition, you get to check out Tokyo and have the chance to experience a culture that is very different from the Western norm. We visit ports like Australia (Sydney, Brisbane, Perth), Korea (Busan, Osan, Seoul), Guam, Thailand (Phuket, Pattaya), Hong Kong, Singapore and probably a few other places I can't remember. You also get a good chance to save some money while you're out here via COLA and teaching English.
As far as the lifestyle of being an E-2 NFO - it's pretty good. The plane is NFO centric and the pilots (in my experience) get involved in the mission. It's a very team-based platform. Squadron cohesiveness is very good and guys are generally friendly and not back-stabbingly competive. I have heard horror stories from guys in other squadrons.
Probably the biggest con of being an E-2 NFO is the view. To be perfectly honest with you, they could put you in a pressure chamber with the same equipment, turn off the lights, shake the hell out of it and you wouldn't know the difference. If you like looking around at the sky and ground while you fly, this is not the plane for you.
As I said before, however, the E-2 is NFO centric. You run the mission. You control other aircraft. You are intimately involved with learning the tactics of other platforms and will probably get a broader understanding of battle group operations than your other TACAIR contemporaries.
So there's all you never wanted to know in a nutshell. If you're curious about any other E-2 stuff or have questions about Japan, please feel free to ask. Hope all the info didn't bore you too bad!