Oh, I know the rules about boarding and the order (technically one step behind SkyPriority), but in France they don't have really a third queue for Schengen flights for Silver/Skyteam Elites so they let me board with the SkyPriority queue. I realise in theory I could be asked to redirect to the general boarding queue but......
The Hop ! flights out of Frankfurt are annoying since people just get bussed to the Embraer jets so there isn't priority boarding.