Trailer Happiness is a cocktail bar in the basement of a building in Notting Hill, London, serving tiki cocktails. It offers piña coladas, espresso martinis, and non-alcoholic cocktails, and makes drinks to suit individual tastes. A group of four can usually get a table almost immediately around 10 p.m. on a Friday night, and there is a DJ in the basement bar. When it gets crowded, the low tables and seating make it hard to move around.