A Vulcanian eruption is a short, violent, relatively small explosion of viscous magma (usually andesite, dacite, or rhyolite). This type of eruption results from the fragmentation and explosion of a plug of lava in a volcanic conduit, or from the rupture of a lava dome (viscous lava that piles up over a vent).
Sail & Sign Card / Account. You will receive your Sail & Sign Card when you first check-in at your embarkation port. Sail & Sign is Carnival's onboard cashless credit program, which allows you to charge all your services, gratuities and purchases during your cruise to your cabin. Your Sail & Sign Card is also your cabin key and boarding card.
1 Carnival's policy is to charge your Sail & Sign Card for the difference in price from the face value of the drink coupon to a higher priced drink. 2  You may get lucky and not be charged. 3  If you use a drink coupon for a drink of lesser value than the face value of the drink coupon you will lose that money.