Nice! We did our first iPad only (for touchpanels) job last summer. 20 iPads. No launchports though. Im using guided access to lock the iPad to the crestron app.

A year later we have only had 1 issue. iPads stopped communicating. It affected every iPad. Power cycling the iPads resolved the issue. Solar Panel company reported a network issue with their hardware around the same time, Hopefully just a random network gremlin.