Just that. Followed instructions and washed at 30° on low spin. End of cycle it was full of water. So quick spin at 1200 - still full of water. Did again at 1400 twice - still full of water. Thought maybe the washing machine was broken but nope. The dress is now spread out on clothes horse which is jammed into bath as fear we may flood the floor otherwise.
Will it be dry by New Years? DH fears for my life if I get caught wearing it in the rain. 
How do the rest of you manage?