Both of these tours feature breweries that have appeared on the Session and CYBI
Fish Brewery is the parent brewery of Leavenworth, makers of several GABF winning beers including CYBI's Leavenworth Alt. Harmon also did a spot on the Session a couple years ago.
Chuckanut just won GABF's Small Brewpub of the year 2009 and National Small Brewery of the Year 2011 and was interviewed by Justin just a few weeks ago.
All of the breweries on both open tours are excellent and you'll have a great time if you go on these trips.
For those lucky few who got onto the Rogue/Snoqualmie/Black Raven Tour-
You are in for a treat- Rogue's Issaquah Brewhouse is top notch, (it's where I teach my BJCP classes) and they have won a multitude of World Beer Cup and GABF awards. Black Raven is a relatively new (4 or 5 yrs now) who have won a bunch of medals at GABF, and Snoqualmie is the home of my brew club (we meet there once a month). They have a rock-solid lineup of beers, my favorite being their Oatmeal Stout (only available in the pub - always on nitro).
Hope to see you there!