Sometimes. I was at an all-inclusive resort and used a reusable cup for all my cocktails (it had a lid and was bigger than the ones the bar would give you). It was weird drinking everything, from cocktails to beer, through a straw! I did find that it slowed down how much I drank, if you have a normal glass you can gulp a drink down in almost no time at all.
I have had a few instances where I am dressed in a suit and tie, having lunch, and the ice in my drink is slightly frozen together. I tip the glass up to get the last of the diet coke or whatever, and suddenly the ice breaks free and comes tumbling down, gets on my suit, shirt, and tie. . . I look like a mess for the remainder of the day and I've got another dry cleaning bill.
OlderAndWiser now uses a straw almost all the time. :)