Just got back from a week bare boating. Before we left, my friend reminded me of the Drinking Man's Guide and I threw my copy in my bag (purchased in 2009). I actually brought it out a few times during our cruise and the reactions were priceless. I only had a few unused slots remaining, one of them at Foxy's for a born here ale... the bartender laughed, explained how Irma destroyed their brew kit/station and then gave me a different bottled beer (which I paid for :-)). In Anegada, we ate at Neptune's Treasure and they laughed but honored the free bottle of wine. Bottom line, it was more of a laugh and story for us (and the bar tenders) BUT they are generally accepting them... just be ready from some confused looks and a little shock that you managed to keep the book dry and in once piece after sailing with it multiple times. Also, there is no expiration (as my friend pointed out).