They are all lined up in a row, you get the one the taxi dispatcher assigns to you. I don't think one is any better than the other, fares are by zone. You could reserve Maurice's taxi in advance, but I would not restrict myself to a time limit. Just take the public ferry and take the taxi that is assigned to you. In most cases, that driver will not ask for payment, preferring to be paid at the end of the day when he picks you up.
Happy planning.
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