My two cents:
The setup of the RDM instance worked well with no issues for me.
I’ve tried the “Python development” section but I didn’t know that I had to restart the server (invenio-cli run) after invenio-cli packages install ./path/to/py-package to make the changes visible, maybe we can add a note on that in the docs?
invenio-cli assets watch worked nicely with no server restart needed.