Back in 2004, yes it was well worth it.
I did three trips out with Keith and Hayden at about £25 a time - very good full days out.
Nowdays though, Hayden has moved on leaving just Keith to lead and in order to cover his costs (or whatever other reason), he occasionally runs (in my oppinion) too big a group.
Having had my days out with Keith (group size of between 4 and 6 vehicles), I was inspired to do a little more research, that found me joining GLASS. Having been a member for 3 years and experiencing the turmoil that was the NERCA, I will not partake in laning that sees a group size of more than four vehicles - as per the GLASS voluntary code of conduct.
In one way I would say yes, you'll have a great day out, but I would take time to consider the negative impact a large convoy of 4x4 has for our pastime. Perhaps, give him a call and discuss your concerns (if you concur with mine)
Lawrence