I'd agree with all the above and add to watch out for the snake getting dull and wrinkly fairly quickly , that can be dehydration which is easily remedied with a decent soak in an enclose /secure tub of water for half an hour .
It's important to allow for Royals to go "off" their food as many do and quite regularly and for long periods . The record for a snake going without food is 20 months ( one year AND eight months ) .... Not surprisingly it was a Royal python who hardly lost any weight , wasn't in this case dehydrated and was in perfect health , it started eating normally
Another thing I think about Royals is that MANY just don't like eating every 7 days as many keepers prefer to do , many Royal keepers may well be better offering them food every two weeks or so and even then be prepared for long periods of not eating .