I have eaten at Campbells two or three times and have been increasingly unimpressed. During the most recent visit, I experienced quite possibly the "waiter with the worst attitude" ever.  He rarely ever spoke...never asked how things were...even after we had to remind him to bring the extra hot barbecue sauce...sort of slammed everything down on the table and cleared the table while I was still eating, nearly hitting me in the nose with his elbow.  I guess it must have been time to go, although their clearly posted hours say they close at 9 PM and it was 8:45.  I was frankly surprised he didn't take the water glass from my hand while I was drinking it...and I had just asked for a refill.   

The food...not bad, but not as good as the flavor at Buster's (which ALWAYS gets slammed by the Oregonian.  They must have offended someone). 

My wife and had the "sampler"...supposedly a sample of everything...this night, it was a sample of everything except pork ribs...something we both wanted to try. 

The beef ribs were OK, as were the two tiny slices of beef brisket.  The turkey was OK, as was the chicken and pork and links...just no big deal.  WHERE WAS THE FLAVOR?

For $21.95, you would think they could have included pork ribs. 

Food:  C
Ambiance: funky, but unclean.  I don't really care for ants crawling on my table. 
Attitude:  Absolutely an F
Parking:  Decent size lot around the building.
Service:  Fast enough, but ineffective and sullen...maybe a D.
Value:  C, a bit more than you would expect to pay and more than Buster's.