I also emailed them and they replied ( copied and pasted) we go next Friday on Britannia on the Baltic cruise like many others we enjoy a pre dinner drink on the balcony but we also purchase drinks in the restaurant bars etc.
Thank you for your email.
A change in policy is not something we are aware of. We believe that responsible drinking is a valued and enjoyable part of a cruise. However, we ask that our policy for the responsible consumption of alcohol is adhered to at all times. We reserve the right to deny access to the ship to anyone who appears to be heavily under the influence of alcohol. We may also confiscate alcohol in the terminal and at the gangway.
Each guest aged 18 years (21 years in United States of America ports) and older may bring up to one litre of wine, Champagne, beer, spirit, or liqueur on board as they embark the ship for the first time only. Alcohol over the one litre limit will be stored and returned to the guest prior to the end of the cruise. If this alcohol is consumed in the dining rooms, bars, restaurants or lounge areas, it will be subject to a corkage fee of £20* per bottle, per occasion which will be charged to the guest’s on-board account.
I hope this has put your mind at ease. We look forward to welcoming you onboard soon.