The custody trial will likely be in a closed courtroom even if nobody files to seal the records, since there are children involved and very personal information from Dr. Dupee's report will be discussed. Sorry!
Other hearings will likely be open. Members of the public usually can sit in the audience unless it's a very crowded court day. When I was looking into appearing remotely at the status conference (I can get by as an attorney since we have a little more latitude to crash hearings), the online registration process requires you to assign yourself to the case and choose what party you're representing. I didn't want to mislead the court so I stopped there.
It goes without saying that if any of you go to California, for whatever reason, I would love to see you.