I went to a couple of the Cabot Conference weekends when they ran. A weekend of sewing, with tutor (which adds to the expense, of course) doing something interesting (Mariner's Compass once time, Lone Star the other), and room, meals and tea and cakes provided.
I'm sure we could manage something just as good, if a little less glamorous. If you just do your own thing, it's still nice to be with people who will come and talk it over, help if needed and perhaps learn from one another - eg you could learn to do proper flying geese or fmq!