and welcome to the tree
Haven't really got much else to add to what other mums have said other than we use fleece and minkee liners as they are great at keeping wetness away from your LOs skin.
Another thought is: have you considered using fleece during the day as a cover? Lots of WAHMs sell flongies and you can also get fleece soakers that will go under clothes. I didn't find it as reliable as lanolised wool but I know mums who have used it very successfully.
Am also very envious of you spending Xmas up the Lakes. Its my favourite place in the world and would
to spend Xmas up there. Whereabouts are you staying?