If I’m back from my weekend, I’ll be there. 
Don’t forget: Foraging baskets or bags - there are blackberries, elderberries, and TONS of crab apples. Also, National Trust cards if you have them - otherwise you have to pay just beyond the main gates for access to the main part of the grounds (you would also have to pay for house/garden tickets if you want them). The house is amazing, a total junk-collectors dream, but due to that fact it can be a bit hairy taking small toddlers in there. Age four and up are usually fascinated, and there is a fun object search sheet, but threes and under just want to hold everything and get under the roped off bits and so on lol.
If you want to explore the most wild part, this is how you go about it. Park in the big field halfway along the driveway. There is a car-width track up to the left shortly after that car park (which you can take, by car, to park up at the top of the hill, but then you miss some exploring). If you look up that wide track, you’ll see a narrow track heading into the trees. That way lies the most incredible fairy house trees and trees that seem to have windows and doors, a hill of bright green bracken, lots of crickets buzzing in the grass, masses of acorns, and eventually the fallen tree the girls call the Dragon Tree. (Down the steps from the Dragon Tree is a BIG pond, so beware children heading off down there alone lol).
Hope I get to meet you all there! If not, enjoy. It is truly beautiful.