I grew up in Longview and hated it. As far as things to do, it depends on what you're into. I spent most of my time at the lake or Reid's (a music venue in the tiny downtown area). I'm the opposite of you, I just moved from Washington to Needles, like an hour-ish away from Vegas. Kalama has some good restaurants, one place Elvis ate at or something. Also, at LCC watch out what crowds you fall into. There are a lot of crappy people that go there. Or just hang out on campus. I mean, there's good people as well but there kind of few and far between. At least that's how it was a few years ago.
Anyways, fun things to do:
Check out downtown Longview
Go to the port in Kalama, they have a nice walking trail and river access
Walk around Lake Sacajawea in Longview
Check out the restaurants
See if Reid's is still around
Get out of Longview/Kalama and hit up the coast, Portland, the Gorge...the pacific NW is gorgeous
Stay out of Kelso
