Alcohol acts a diuretic and may slow down the process of rehydration after the match. Despite what you may have heard about beer and carbohydrate-loading, alcoholic drinks are low in carbohydrate content and will not help replenish your muscle glycogen stores. If you are going to drink, ideally you should rehydrate and refuel after a match prior to indulging in 1-2 drinks MAXIMUM!
Its true! To help promote recovery, the recommendations clearly state 20-25g of fast acting protein (e.g. whey), and 1.2g/kg body weight of carbohydrate. It is easy to get the hit of protein from milk, a recovery shake or a chicken sandwich, but the carbohydrate becomes a little tougher if you like to be detailed enough regarding your body weight. That aside, evidence shows the benefits of milk in improving recovery similar to that of classical supplements. There are small differences between formulations for those who want to know more, but the question is a good one, and the answer is yes.