I don't really know much about other than what my Yamaha dealer told me, and what I saw on the website. I want to ride the Dual Sport ride. They also have an Adventure Ride, consisting of gravel and asphalt, and an all Asphalt Ride. Hog roast Sat evening. Sounds like something for everyone.
Follow up: Just talked to a coworker who is a member of this club and according to him every section will be open for riding this weekend and the only issue at all will be a little dust due to the lack of rain.
If your co-worker has run the Dual Sport section, ask the level of difficulty, please. I'm a rookie at the dirtbike thing and would hate to make a complete fool of myself. Partial fool would be OK, but complete fool, well, that's just unacceptable.
Just talked to my friend and he said you should be fine. A lot of the course is ridden only once a year so it isn't rutted up real bad. He did say that there is one section of the course that has both expert and beginner trails. His recomendation was to stay away from the expert trails and they will all be clearly marked. Other than that he said to have a good time.
What this was was an organised trail ride with kind of a "scavenger hunt" mixed in. It is trail riding for 20 minutes or so, with a 20 minute road ride to the next patch of ground with trails, you ride that, then ride to the next location and so on. Nice grilled lunch, great pork roast for supper. Super nice people. $45 well spent.
There were a few challenging parts of the course. At least they look challenging to a new guy. I really didn't have any problems. 450 is a good bike for this kind of thing.