This is a mixed-weather day, not a dependable rainy-day fallback. The castle and cafés offer indoor breaks, but the playground, Walled Garden and estate routes are outside; wet weather will change how much of the grounds you want to use.
The site is spread across grass, gravel, cobbles, tarmac and unpaved tracks. The longer walks have stiles, and the castle lift is currently being replaced, so wheelchair and mobility-scooter users cannot access the castle until further notice. If a pushchair or step-free route is central to the visit, contact Floors before booking and ask which entrance and area will work.