Thanks for the good wishes David. Fingers etc etc crossed re weather!
We're not setting out until the afternoon, so we'll take a raincheck (geddit???) on whether or not to delay the journey by a day if necessary.
And thank you weed for reminding me about the raspberries - they're beginning to ripen, so I'll pick and freeze what I can tomorrow morning, and instruct son in the complicated arts of doing the same in my absence. I would show him how to water things, but in the circumstances . . . .