You won't get seat power or preflight beverage service as you might on AA.
You will get friendly service, (paid) wifi if it's a 737-800 or -900, and some kind of food. The Board Room comp is a huge advantage over AA if you don't have other lounge access. I don't love the Alaska F seats but some do. They have a complimentary personal video player with a tiny tiny screen.
Frankly, available wifi is by far the most important amenity to me.
Enjoy.
QL