Dennis,
There may be some variations, but generally speaking to shut down a coach you first turn off any devices you can, either DC voltage or AC voltage. If you have inverter / chargers turn the inverter off. On my coaches there have been switches to disconnect 120 Volt power to the inverter, but also an inverter switch which in my case was located on the remote for the converter.
Then I would turn off all battery master switches. For the chassis that would be the main 24 volt disconnect, but also the smaller 12 volt switch. I am not familiar with the Royale so I don’t know how many house battery switches there are, or if there are any devices that need to be disconnected or powered off in a specific sequence.
One thing to note is that even with the chassis master switches turned off, there is likely to be 12 volt (not 24) power directly from the chassis batteries direct to several DDEC circuit breakers in the rear electric box. These maintain the memory of the DDEC, but are a modest, yet constant battery drain. I would suggest you disconnect those wires. They will be easy to see because instead of being big cables on the chassis batteries the wires will be relatively small, perhaps 10 or 12 gauge.
Prior to putting the coach to sleep try to insure the batteries have a good charge and if they are old, perhaps three years of age or more, you might want to take the time to disconnect the cables joining them. That way if one is marginal or has gone bad it will not draw down and destroy the remaining ones. If you know the batteries to be good you are likely to be OK leaving them connected.
Perhaps some Royale owners can jump in here and add or correct my comments.