My father, who is quite successful and I at the higher end of the rationality scale, was at one point very heavily involved with Landmark (he may still be, I’ve never brought it up). During the time I lived with him as a teenager, I often wouldn’t see him most weeknights until 10 or 11 PM, because he was off doing some Landmark related activity or another.
I still don’t know exactly what he got out of Landmark, aside from having met his wife there (which is certainly a big gain). After much pressure from him, I eventually went to a version of the Forum designed for teenagers. I can confirm novalis’ claim about the lengths of the days. Ultimately, spending that weekend was a positive experience for me, though I remember very little detail about it. It did help me bond with my father at a time when our relationship was incredibly strained (as I suspect quite a lot of father and 15-year old son relationships are).
I don’t know what to add beyond my anecdotal experiences; those are more than a decade removed at this point and detailed memory is largely obscured by a number of issues I had at that age. Still, I’ll be happy to answer any questions I can about it.
Would there be any interest in holding these further south? I’m in downtown SLC, without a car, but am otherwise interested.