In the first place, Islam doesn´t allow believers to drink alcohol, it´s forbidden. Secondly, Muslims don´t eat pork nor any type of meat considered impure; Muslim can only eat halal (approved) things. And thirdly, the Koran and Muhammad´s teachings do not consent to lenient dating rules; on the contrary, sex is to be permitted only after marriage. So, the only true statement here is that Islam encourages modest dressing, especially by women.
