The virgin bannana banana daiquiri was very good and also the virgin pina colada was tasty. Yes there is a charge for these drinks on the victory anyway. Sorry I cant remember the price but it wasn't that much.
Have a great time on your cruise
As Chairman Kaga (Iron Chef) says." If memory serves me correctly..."
Virgin drinks on Celebrity and Princess were $2.00. NCL was $2.25. There is the 15% added to your bill for these also. Most feature a "Drink of the Day" at a special price and these are also available as virgin.