Avebury's always a good bet due to the aforementioned bolthole in case of inclement weather.
Lots to see if the weather's good, and lots to see in the Avebury and Devizes museums if it's bad (plus lunch, a pint or two and a chinwag at The Red Lion or the Waggon and Horses).
Be good if Loie and BuckE can make it over again, and if some of our Irish and north country friends could make it as well this time.