Where to stay
There is an OSU home football game on Saturday, Nov. 15. Because of that, lodging may be scarce and more expensive as the date gets closer. You would be advised to make reservations as soon as possible to ensure a place to stay.
Here is a good place to start:
The trial site is on the north side of Corvallis, about 5 miles from the center of town. It is about 8 miles west of Albany, and 16 miles south of Monmouth. Salem is 32 miles north of the site, ad should have plenty of lodging available. There is not a home football game for U of O in Eugene, so lodging should be more plentiful and cheaper there. Eugene is about 50 miles south of the trial site.
For camping sites, here is a starting place:
Again, the closer to Corvallis they are, the less likely they are to have vacancies. You might need to get creative and drive in from Salem, Eugene or the coast on your trial day.