Do you wear a pair of old flip flops where the tread has been worn off? If so, it’s time for an upgrade. Decks on cruise ships can get slippery. Between rain showers, splashes from the pool, or cleaning by the crew, there are lots of times you’ll find wet decks. If you don’t have sandals with grip then it’s not just a nuisance — it’s downright dangerous. You don’t want a slip and fall ruining your vacation.