No, they are happy for you to take it all. (Or if they're not happy, they can't do much about it under the RA T&C's).

Note though that my stay was in 2005 before the hand baggage liquid restrictions. You now need to check in a suitcase if you want to empty the bar, with the risk that one of the bottles won't survive the journey and your dry cleaning bill will exceed the value of the drink.

Someone published the current bar list recently, it seemed much the same.