Ok, I can understand the port thing as far as waiting your turn- esp since PR
is an origin port as well. However will there be things to do, safe things to do that late in the day? We were hoping to do some historic type tours but I remember Nassau shuttered up at 5, except for Senor Frogs and we aren't the party types.
I think I would be hesitiant to head out on an excursion at 4-5 in the afternoon.