Which terminal are you flying in to? If it's A/B/C/D you can absolutely make it to the Board Room. If it's the N. Satellite (or S. Sat if you are flying internationally), you'll have to take a tram to get there, in which case it might be time prohibitive.
Funny you should ask, sigh. Alaska will not give out/assign the terminal until 24 hours prior to flight "because there's so much activity there." So I not only don't know the arrival terminal I don't know the departure terminal either. They told me it would either be B, C or N. Connecting flight is to Vancouver, likely a different terminal???
To the other kind folks who answered, thanks I'll explore buying a Board Room pass --I've heard some folks just stand outside and depend on the kindness of strangers to let them in as a guest.
Depending on terminals/time--if I have to switch to Intl.-- not sure it's worth $45 for a less than 2 hr. one day pass to the Board Room and the question remains whether I have time to make it to UA Club in Terminal A.
I have no other lounge access, passes or CCs that allow.