My friend and I are planning a trip to Southeast Asia.  We are both 27, male, heterosexual.  We will be there approximately 8 days in April and are looking for advice on cities to visit, activities to plan, hotels to stay at and so on.     We are generally more interested in partying than sightseeing.  Also sightseeing is easy find via Google. We are not pinching pennies on this trip.  We can spend ~$3K + airfare.     Advice would be much appreciated.  We...