Bubbles on line vs. On ship

[thepla]

I have a bit of obc so I'm thinking of buying bubbles for me and my son on board. My first time on carnival, royal for example has a but internet and soda together in advance for a great discount. I'm this case it does not seem as if they give even a ten percent discount up front.

 

What I'm asking is bubbles same price on ship as in advance?

[Guest BasicSailor]

May be save a few dollars in advance from the last time I bought it. But it's very aggravating to have to fight at the bars just to get a soda over those ordering drinks. But I think that's changed now, or has it?