The Ordo Fanaticus game club. It's on Google maps.
Other options are Portland Game Store in North Portland, medium store, decent terrain, open and well lit with alcohol on tap or canned alcohol drinks
Guardian Games biggest store, limited alcohol drinking area, likely to be crowded. In Portland on the east side.
Red Castle on 65th and Holgate (Ish) ok terrain selection, less than the others I believe, same rough size as Portland Game Store
Geeks and Games in Oregon City will be open for sure (though the other stores will be losing money if they are closed so they are nearly guaranteed to be open) they have a good tables and good terrain selection as they are more of a hobby store compared to the others.
Those are the stores I frequent or have been to