Lauri, all of the above suggestions are fine - there are so many things to see and do in Seattle. However, arriving just the day before does not leave you much time. The ferries from the Colman Dock in Seattle go to either Bainbridge Island (about 35 minutes each way) or to Bremerton (about 1 hour each way). Be prepared for hill climbing on the way back to the Westin! There are several good restaurants near the Pike Place Market and also along the waterfront. If you want "Northwest" dining, Elliot's on the waterfront is the best (IMHO)! Closer to the Westin you will find the Union Square Grill which is our favorite steakhouse in the city. (Sorry, Met fans!)
The closest liquor store that I know of is on the corner of 2nd Avenue and Seneca Street which is on the way to the waterfront.
To make it easier, if you would like to email me privately, I can send you some of the street maps, etc., with different locations indicated. My email address is eys_0318@hotmail.com.
In case you haven't guessed, I am in Seattle (or at least I work there!). We live about 20 miles south of downtown in Kent. We have been here for almost 30 years, so I would be happy to send you the info!
And you will love the Alaska trip!
T "l" of "s and l" - Liz