Great posts! Vagabundos is the group that we have signed up with to caravan to Cabo in January 2017. We made a deposit so that we are sure to have a spot. They told me it's usually 6-8 rigs. I don't know if that's the limit or just what they usually have. For anyone interested, you can go to their website and get a lot of information about the trip.
We got the membership with our reservation and the package they sent has a lot of information and includes applications for insurance.
We would love it if there were another Airstream joining the January caravan. Our plans are to stay down there, in Loreto, a couple of months after visiting Cabo and La Paz.