hong kong 28-31 may

For halal restaurants, there are many of those around considering the sizeable muslim population.

Itinerary: depends on what you like. There's a lot to see, many Chinese temples, old and new buildings, etc. The mosques may be interesting for you as well. The biggest one is the Kowloon Mosque in Tsimshatsui.

Outside the city you may go to the outlying islands (Cheung Chau, Peng Chau, Lamma) or visit Lantau (Big Buddha, Tai O fishing village, Ngong Ping 360 cable car). Those places are not too crowded on weekdays, and make for great walks in the natural area.