Congratulations, and welcome to your greatest adventure ever!
As far as the advice about the Blackstone griddle....
You'll need to buy an adapter, and a propane hose with quick connections; in order to use it with your RV's propane hookup...
http://www.thorforums.com/forums/att...1&d=1565993008
http://www.thorforums.com/forums/att...1&d=1565993008