We planned to visit 5 venues (Getty Center, New Children's Museum in San Diego, LACMA, Phoenix Art Museum and Arizona Museum for Youth). In the end, we visited 10 (the above plus Skirball Center, Griffith Observatory, Scottsdale Museum of Contemporary Art, Desert Botanical Gardens and the Children's Museum of Phoenix).
We have a massive list of further places to investigate, as well as an even bigger list of reports and books to look up and read. I'll post all these later.
It was such a rich and diverse experience: lots of shared ideas, but also lots of divergent ones, alongside a couple of fairly controversial ones. Really looking forward to putting it all to use.