Can you take enough can sodas on the ship with you for your cabin??? I drink DietDr. Pepper only have to have at least 1 in the morning and 1 before bed!!No Joke or Bad headaches!!!! Know what I mean?

Yes you can.

 My family took a Western Carribean cruise at the begining of August.  Each one of us took a six pack of our favorite soda.

While standing in line at embarkation we noticed a young man with a whole fridge pack.  And yes...they let him board with his box of sodas. 

You are allowed to take on what can be held in a small cooler.

 Bottoms up...

We took four 12 packs with us last fall and no one said a word about it!

tootie,

Thank you to everyone who responded. They are correct. Here is a little more information.

Guests may bring a small quantity of non-alcoholic beverages. Excessive quantities will be determined at Carnival’s discretion. As an example, guests will be permitted to bring bottles of water/soda in their carry-on or checked baggage. Carnival strongly recommends that guests do not bring a large quantity of non-alcoholic beverages that will be subject to confiscation at embarkation.”

Also if you wanted to bring a cooler:

Coolers: Carnival Cruise Lines does not allow guests to bring large coolers on board its vessels. Small, personal-sized coolers no larger than 12” x 12” x 12” for the purpose of housing small quantities of non-alcoholic beverages and/or medications are permitted as carry-on luggage. Screening and movement of large coolers through embarkation is an impediment to the boarding and security screening process and therefore large coolers are not permitted as carry-on or checked luggage.