I picked up a very similar tent to that, that someone had left in the mud at Glastonbury 2007. Cleaned it up and used it at a lot of messier festivals over the years. Save for a couple of small burn holes caused by falling embers from a nearby tent fire at Reading 2009, it’s still functional. In fact used it at Arc-Tan-Gent last year - it rained heavily, non-stop for 18 hours on one day but the tent stayed dry inside.