Well then, you will miss the Qingdao International Beer Festivals. It is a pity.
As to place to see: You can visit Zhanqiao in 6th Bathing Beach near Qingdao Railway Staion. There is also a folk museum nearby. Zhonshan Rd is a famous business street of the city with exotic architecture style. No.1 Bathing Beach is a popular place for both local people and visitors. The Ocean Park near the Wusi Square is also a good choice. If you have enough time, you can visit the Laoshan Mountain, which is a well-know Taoist shrine.