The thing you are seeing as a 7, I am seeing as the pointy part of an arrow. The word "hole" I am interpreting as the word "here" only because it points to an X on the shape thing that I am guessing represents the island? Also, is that the word "beer" in the upper right?
Also, when I go back and look a second time, the "BA" I saw actually says "UBA" so when he was in this altered state he was probably picking up "Aruba" and didn't realize it.
Yes, I see the arrow, now. (Duh moment) It does look like it says, 'beer'. And that arrow points in the general area of the bird sanctuary on the map.