Our stay at Seven Feathers was for only one night on our way to northern Oregon, but we totally liked the site.  It was a pull through with plenty of space with grass between sites, and everything was super clean.  The utilities were great and the place was quiet.  We are not gamblers, but if we were, this could be a great place to be comfortable while supporting the tribe quarter by quarter LOL.  Seriously, it is a very well run and maintained camp, with great planning when it was developed.