Only boring people get bored.
That being said, if you can entertain yourself where you're at, you can entertain yourself wherever you go on Earth and it shouldn't be no problem for you.
I don't know where you at, but I'm assuming you already live in America.
Portland or Seattle shouldn't be no different (On a culture shock level) to where you live at already.
Go and enjoy yourself, unless you know you the type to need other people around to keep you occupied.
I do most all my travelling dolo because I hate being with people who ain't flexible "pause".
Gotta stick to itinnerarys. Got to trip the holiday like a field trip with a history quiz at the end of it.
Be looking up yelp reviews for restaurants or lists on YouTube for the "Best of" places.
fukk that.
I live for spontaneity and fukkery while readily accepting that one day I just might die from the pursuit of that.
I just go out with cash, a blade, a phone and someone back home I ping my locations to incase I end up missing on one of my many adventures 'cause a breh really does find himself out here in weird places, being so personable at times.
Even if you unsure of yourself, it's just two days.
IF you find it's not to your liking, being alone and failing to come up with things to do/entertain yourself with, you'll know quickly and be able to move different next vacation.