Drink Packages - MSC Orchestra - Translantic

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I have been informed by my TA that the following Drink Packages are available for my forthcoming South American/Translantic Cruises :

 

512- 14 Soft Drinks (cans/fruit juice) = £28.80................£2.05 per drink

513 - 14 Beers (33cl) = £39.60.....................................£2.83 per drink

521 - 7 bottles wine selected by Sommelier + 7 bottles mineral water (100cl) = £112.50....................................£16.07 per bottle wine/water

 

This is the total pre-paid price so not on board graturity added, is this a good deal ? prices do not look outstanding to me, better to pre-purchase or buy on board, I have been advised that on-board prices will probably be in $, will this make on board prices more attractive ?

Any help, recent previous experience appreciated.