JEDDAH, 20 November — Hasan Saqr, director general of the Tourism Resorts and Real Estate Company Ltd., says he anticipates that domestic tourism will grow by 20 percent next year thanks largely to the expanding infrastructure in the sector and the difficulties experienced by Saudi tourists following the Sept. 11 attacks. He added that his own company has also been undertaking marketing research with Sheraton hotels in Jeddah, Makkah, and Madinah, and various tourist resorts and villages, during the past three years, and it aims to open new tourist projects in the Kingdom soon.