I think it is good to bring a couple of bottles of good wine that I know I will enjoy on board. I like to have a glass while I am getting ready for dinner (a before happy hour glass) and I like to have a chilled bottle so that I can have a glass on the veranda when I get back on board after a long shore excursion. Others may enjoy having all their drinks at a bar, in a lounge, or other public venue. I think it is just a personal preference. I definitely don't like to carry around a glass of wine in elevators. With a drink package those days are long gone.