In reply to Nath:
I had nearly posted the same question as yours on UKC last Friday, but decided to just follow the Ground Conditions advice in the end.
I was slightly annoyed in the end that I'd taken the kit up. The conditions on the paths (including where the tourist path joins the summit ridge of Snowdon) were no-where near needing ice axe or crampons. I would have been better off taking some extra water and a couple of cans of coke instead as it was so warm that I finished off my 1.5 litre bladder of water before I finished the walk.
I was surprised that they repeated the advice on the 30th March bulletin. It does come across a bit as crying wolf. I'm sure a few days earlier the top of the tourist path would have had enough hard snow on it to make it treacherous without the right kit though.