There's some planning when skiing (for reference, I ski at A Basin yearly too; great place), but I think this is a bit of an exaggeration. Usually it's pretty easy to plan, esp. at A Basin to say, "meet at the midway restaurant".
And from a technological standpoint, all the maps that you can have printed are all online as well, so in the same way that Yellow Book entries are now database rows, maps are either primitive PNGs or interactive terrain maps.
Sure and the planning at A Basin depends on the situation. If everyone is leaving from the same car, its easy. But if you have 3-4 car loads of people leaving and arriving at different times, you want to make sure a plan is in place before people have started arriving.
And from a technological standpoint, all the maps that you can have printed are all online as well, so in the same way that Yellow Book entries are now database rows, maps are either primitive PNGs or interactive terrain maps.