We have a vacation planned for June and was hoping to get the Basic Open water scuba certification before arriving. It looks like we might have difficulty completing the open water dive portion of the program because of schedule conflicts. Our local scuba dive school told us that they can give us a letter so that we can complete our open water dives on the island. Has anyone done completed their certification this way? Should we try harder to compete it prior to our arrival or do you think this is ok? Is it more costly to do the open water dive on the island? Any advise would be appreciated.