From the research and talking to people before we bought our TT you have 24hrs at most to get a canvas TT open if packed away wet and 48hrs if acrylic - it will still go mouldy.
Also went for a canvas as cooler in the warm weather and breathable in the wet weather!
------------- Nick
2017
April - New Forest(9)
May - Dorset (9)
August - Camping Le Pin Parasol, Vendee (18)
October - East Mersea (8)
and five nights in the one man tent!
Amazing family weekend with old steam engines, classic car displays, market stalls, and full catering and bar. And camping on site - Save £25 by booking in advance.