One thing to be careful of is that the demos are inclusive of all the work required to build functional software. Prepare the team to demo all the parts of their work: the APIs, the infrastructure, the reliability work, and the testing. If you're in an environment where there is less trust, or the leadership doesn't understand how software should be built, you may need to use the demos to educate and give context on the team's work. It's also important for you to cheerlead the work that isn't customer facing.
And added davidkunz to the Thank you section.