DURING the next two months one lucky visitor to Hong Kong is going to win a holiday package consisting of two round trip air tickets to Hong Kong from any Cathay Pacific destination, and six nights' hotel accommodation in one of the Gold Coast hotel's deluxe twin rooms. This is the first prize in a ''Win the World of Hong Kong'' competition organised by the Association of Retailers and Tourism Services (ARTS). Last year, the Committee of Retailers, as ARTS was then called, organised games stalls along the ''Tourism Walk for Charity'' route, but it was less than successful. This year, ARTS has decided to do something that will both raise money for charity, and promote ARTS. The result is the ''Win the World Competition'' which is open to bona fide tourists until January 14. Visitors making a purchase from one of the 111 branches of the 66 shops and restaurants participating in the promotion are eligible to enter a draw. Many of the participants offer substantial discounts or free gifts with the purchase. Tourists can buy clothing from Etienne Aigner, shoes from Fratelli Rossetti, handbags from Mandarina Duck, or jewellery from Larry Jewellery, Tse Sui Luen and President Jewellery. China Arts and Crafts, Yue Hwa and Duty Free Shoppers are taking part, as are the Optical Shop, and Sam's Tailor. A number of restaurants offering Indian, Thai, Italian, Chinese and vegetarian food are involved. ''We wanted to create something interesting for tourists,'' said John Lee, vice-president of ARTS and Tom Lee Music Company, which is also participating. ''So far, feedback has been positive. ''We would have liked to have more shops and restaurants involved, but the small number is due to short notice. Hopefully, we will have more next year.'' The promotion, which offers more than $200,000 in prizes, also hopes to raise between $150,000 and $200,000 for charity through participation fees and sponsorship. An important aspect of the promotion concerns the retail industry itself. ''Retailers have to learn to adapt to change to meet the higher expectations of tourists,'' said Mr Lee. ''We hope to upgrade the quality of retailers through training and education, which will provide added value for tourists. ''There is a need to upgrade the customer service of retailing, both for Hong Kong citizens and tourists, and we constantly have to emphasise customer service to companies.'' Tourists can obtain a booklet outlining details of the competition from any Hong Kong Tourist Association outlet.