Advice and reassurance needed, please. Taking ddog on his first holiday, in a caravan, to a sheep farm. Have got him a travel crate, so he can sleep in the caravan with us. Bought him an extending lead, because he'll have to be on lead for all walks, a ground tether thingy and planning to get a length of chain for it (which will look ridiculous, tethering a frou-frou toy breed, but he chews through everything).
What else do I need to know?