As over 100 beer, spirits and wine firms head to flood-hit Cannes this weekend for the Tax Free World Association's World Exhibition - the biggest event in the Travel Retail industry's calendar - they can look back on a tumultuous year. On the one hand, the number of international travellers continues to rise worldwide. Yet, a growing number of destabilising factors have hit the Travel Retail sector hard in recent times, jeopardising a niche, but high-profile business that, according to The IWSR, was worth in the region of US$9bn last year.