Hi JC, not as bad as your Belvoir 2008 experience, fortunately.
The Hereford MES were out of action for the day but the Stirling Engine enthusiasts put on a show inside the museum, some travelled hundreds of miles as had several spectators eg Kent, Isle of Wight, Chelmsford

Two exhibitors had travelled from Cornwall to show their scratch built Rider engine. As it was large and coal fired it had to stay outside. However they kept it running all day in the rain

Andy