You go to your room and sleep. When you wake up, you will arrive. Talk to the guy that let you in and he will move away letting you get out.
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Once you get off the S.S. Anne, you can not reenter the cruise ship, it sails away once you leave.
disembark
Not all Pokemon are based off of animals. When Eevee was created, it's evolved forms were based off of it.
You simply can't go there.
ditto