not a brit either, but I loved olympic national park, it was amazing. we just went for a day trip but I would have loved to have stayed a while.
Freemont was a little kooky but we got a kick out of the outdoor Movie theatre - though that was 5 years ago, so I don't know if it's still going.
For my money the Oregon/WA coast is some of the most beautiful scenery I had seen in all of the 16 states I visited.
I know is very very far out of your way, but Yellowstone was my favourite place on my whole trip around the country, so if you have the time, you should go.