This one is very moralistic. It's a 1.01 guide to rehab. Rachel does drugs, and goes home to Ireland to detox after a suicide attempt. This is one in the series about the Walsh sisters. I've already read Watermelon (about sister Claire who has a baby and is dumped by eejit husband at hospital) and Angels (about Margaret who goes to LA when her husband has an affair). I've also read Last Chance Saloon, Sushi for beginners and The Other Side of the Story.
Marian Keyes strong point is her description of the Irish. Growing up I could have used some books like this. They're not literary masterpieces, but fun. Everyone gets a bit of sex and learns about themselves.
Best episode in Rachel's Holiday: when the inmates of rehab centre Cloisters are discussing what chocolate bars to buy.