Hi Andrew,
we washed ours on a 30 degree wash .... no problems, but they are 'big' to get on the line :)
and possibly a 'min spin' because of the size to iron after words :)
Just washed our inners on Monday after getting back from the lakes. Curtains are next. As per above we just did them on a cool cycle and line dried them. I'll be putting them back this weekend at the same time as fixing the 240v socket the broke on our last trip :(
To be honest I hadn't really planed on ironing the bedroom tents. They get folded up the camper anyway and never seem too creased afterwards. They came off the line looking pretty good. I'll have to see what they look like when I put them back tomorrow.