Do I need a Passport?

[BlueTJCO]

I was reading that you do not need a passport to go to the virgin islands and re-enter into the States???

I'm just curious as I dont have a passport and was going to go get it taken care of and then I read that I wouldn't need a passport...... I am still going to get my passport but assuming the worst something went wrong or it took a long time to arrive, would I be ok?

Can anyone enlighten me please?

Leaving from: Puerto Rico
then:
Bridgetown, Barbados
Castries, St. Lucia
St. Johns, Antigua
Philipsburg, St. Maarten
Charlotte Amalie, St. Thomas

back to: Puerto Rico