So I learned last night from FI's sister that their grandfather does not condone gambling, he is very against it. He also is very against social drinking. So much that he will walk out of the room I was told. We are having an in suite reception in 2 weeks, in vegas. How do I handle these concerns. Should I respect his feelings and be careful and tell our guests to hold off on the drinking? FI says its our wedding, and since we are paying for it in full, it isn't up to him. What do you think?