I have never been on a cruise so i am planning to go. But as a F-1 there are too many restrictions.If we go on a cruise to Carribean islands for couple of days do we need to get a visa or any permit? also,what are the documents we need to carry along with us? (just checking if we have to carry our I-20s & passport,I-94 since we will be leaving US)

  I would appreciate your inputs.