What is a single supplement and why do we have to pay it? It seems so mean. Some travel operators, (for example accommodation providers and cruise companies) impose an extra charge to people who travel alone. Their argument is that a single person does not spend as much as two people on additional revenue generating services such as food and drinks and therefore the lone occupant has to make up that shortfall. However, the percentage of single travellers is increasing, and the traditional industry providers are changing due to the introduction of new competition from innovative demand based start-ups. Here are a few top tips to use if you are unattached and itching to see the world!