The name is Favored Nights. Directed by former TVB producer Chien Kwok-wai, it stars Yeung Ai-jin, Shum Chi-ming, Chan Pak-yu, Lian Sze-ya, Cheng Yung, Ho Pui-yu, Sin Sai-li and Chan Ching. It was filmed in Lan Kwai Fong, the most famous concentration of bars and nightclubs in Hong Kong.
The rabbit girl is played by Lian Shiya. The one who plays the frog is Shum Chi-ming.
Quite an eye candy movie. It depicts the reality of night life in Hong Kong.
Now there is a second movie. The actors have changed. The scale is bigger.