We got out - without getting wet
We managed to seize our opportunity at 10am, and managed to get an hour and a half's walk in, without getting wet. It's now pouring down again (3pm'ish). We'll watch for our next chance. Wake-up time? We've settled on 6.45am, just half way between their normal getup and ours. But don't worry, they'll be back to 6am again by the time they go home.