Well that is called hospitality. It is also a way to know more and get to know your client in a less serious and fun way. I am no business owner but my uncle does, his business is real estate. When clients come from a long trip he usually bring them to resort and in places where they can relax and have fun then the next day they will focus on the business. Believe me though the transaction is not a success the client will come back again to you due to your attitude and how you handle them. When you establish good relations even if you didnt close the deal sooner or later they will come back and prioritize you over other businessman.
I started my business focusing on the geekier side of things, through the years I slowly realized that somehow it is expected as clients visit from different towns.
