Baileys is made with cream, so I imagine its not within the 5% fat rule lol Other alcohol, like spirits, lagers and beers are all fat free. Its just the creamy drinks you need to be aware of ( so yep Baileys, Pina Coladas etc)
Oh and I've found the answer to your question...Baileys has 15.7g of fat per 100mls...found the answer here ..Calorie Counter - Alcohol