On our 2006 and 2008 trips to Thailand, where we stayed at Merlin Beach Resort, there was a happy hour for cocktails, which we enjoyed occasionally. Well yes, probably every day. Why not, we were on holidays! We also had a duty-free bottle of Jim Beam to imbibe.
In 2008, staying at the same place, we were a little wiser, as we had worked out if you sat at the bar during Happy Hour, they had no choice but to make the cocktails at regular strength. We suspected that if you were sitting elsewhere the drinks were a little less potent. No evidence, just suspicions.
Two years later it looks like we were drinking the same cocktail. Perhaps it was a specialty of the house, and obviously yummy!