Add to ORKGThanks are given to the following people: First and foremost I offer my sincerest gratitude to my supervisor, Dr Anders steene, who has supported me throughout my thesis with his patience and knowledge whilst allowing me the room to work in my own way. I attribute the level of my Masters degree to his encouragement and effort and without him this thesis, too, would not have been completed or written. One simply could not wish for a better or friendlier supervisor. The hotel managers who gave generously of their time and expertise. Finally, I wish to thank my family and friends for their encouragement and Patience