They offer so many helpful tips. When I go, I usually bring about 100 dollars per day, per person (so on a 7 day cruise, visiting 3 ports, 300), but I rarely spend that much on shore. It’s mostly for transportation around the island and food.hey offer so many helpful tips. When I go, I usually bring about 100 dollars per day, per person (so on a 7 day cruise, visiting 3 ports, 300), but I rarely spend that much on shore. It’s mostly for transportation around the island and food.