Friends of mine came to Calis for the first time for a week last Sept. They loved it and paid a deposit of £100 to a hotel for the first 2 weeks in June this year. The flights for that time proved too expensive and for less than the price of the flights, they got a 2 week holiday half board in Malta so they wont be coming to Calis. Fortunately the hotel said they can choose another time to come to Calis and they will hold the deposit so the wont lose it.