Hello!
6 days is not long, you can consider going to Taiwan, China, Thailand or the cruise.
1. If you join the tour, you have to pay the extra fee for the Christmas tour. Therefore, you have to book a tour as soon as possible.
2. If you go by yourself, you can avoid the extra fee. However, a lot of tours is cheaper than packages. For example, we had been to Thailand in December. The package is more expensive than the tour and my Thai friend told me that December is a peak season in Thailand.
3. Some places are so quiet during Christmas, for example, in Europe, shopping malls are not open and the transportation facility is limited in the Public Holiday.
4. 台灣
e.g. Wingon TKH05RM 五天環島超值團 From $2199.00
高雄(佛光山、六合夜市)、台中(日月潭、九族文化機動樂園)、台北(故宮博物館、北投椰林露天溫泉、101購物中心、九份)
It is not expensive to shop and eat in Taiwan. This tour includes hot spring, sightseeing, museum, theme park, shopping & night market. According to Wingon, 天天出發, 成本特高, you may double check the details or find a similar tour elsewhere.
5. Mainland China
a. Where I don't suggest: The northern part of China, e.g. Beijing (it's likely snow, 3 - (-7) degree), Shanghai (2 - 11 degree), Habin (15 - (-2) degree)
because it is really cold in December.
b. Suggestion: 海南島
e.g. Wingon 識食識嘆~頂級豪華之旅
海南島歡樂美食(全包宴)五天豪華直航團 (足穴按摩、熱帶植物園、南山文化旅
遊區、鹿回頭山頂公園) (HBX05X) From 1799.00
My mother had been to 海南島, she highly recommended this place. Also,
the weather is better than the northern part of China in December.
This tour includes all meals and it is a delux tour, check with Wingon or
elsewhere for a similar tour.
6. 麗星郵輪
http://www.starcruises.com.hk/tc_html/spc.htm
「天秤星號」南中國海航
3 days 2 nights 23/12/07 From $1399.00
4 days 2 nights 22/12/07 From $2969.00
「寶瓶星號」南中國海航 2days 1 night.
23/12/07 From $619.00 no Christmas extra fee.
「雙魚星號」南中國海航 2days 1 night.
23/12/07 From $499.00 no Christmas extra fee.
7. 泰國
A lot of tours are cheap, you may go to a 5-day tour. Check the details with the travel agent see if you like visting Bangkok, beaches, or the Great Palace, etc.
e.g. Wingon From 1499.00.
參考: Myself, Been to 麗星郵輪, 台灣, 泰國, China, etc.