I went on one that was organized by member Tequila. He did a good job and had an excellent wagon master. Lots of different personalities, some fit, some didn't, but all got along good and we had a great time over 60+ days. Still have some permanent acquaintances that keep in touch from that trip.
Their goal is to be in the new campsite by 2pm. . .that way it allows for an unexpected event to be settled along the way - very well thought out from my perspective. 10 or 12 rigs is a good group and very manageable.
We had Green Angel escorts. . .they stopped traffic for the group and provided breakdown support if needed. We had Class A's, 5'vers, C's and truck campers. It was money well spent.