Prices do change in line with currency fluctuations, but the difference is fairly minimal at the moment, As for your 15% being added at the end of cruise, not true. The 15% is added at the point of sale, so if you pre purchase, it will be added there and then...........Wilba.
We booked in advance for Adventure Sept 3rd and saved around 5 pound per bottle for a 12 bottle package .
The current price in US Dollars is $345 inc the 15% grat for the 12 bottle Platinum Pack if you purchase onboard. I doubt very much you will save £60 by pre purchasing, in fact a few months ago I pre purchased the same pack for £208, a saving then as now of about £7 on 12 bottles. Hardly worth worrying about..........Wilba.