Nanjing Visit 06~13th/Nov-Questions

This is my first time visiting the area and I will be staying from 06th~13th/Nov. During my stay, I will need to attend a conference on Nov 10 & 11 in Wanda Jiahua Hotel. My goal is to stay with your hotel thru my WHOLE ENTIRE TRIP if I don’t have to move hotel. But it depends on the travel distance from your hotel to Wanda Jiahua Hotel. I have several questions and maybe you can assist with my hotel planning.

1) Rush hours of the city? I m worry the taxi ride will be too long from my hotel (Crowne Plaza Jiangning) to Wanda Jiahua Hotel (Conference location)
2) Can you please advise the Taxi fee from Crowne Plaza Jiangning to Wanda Hiahua Hotel ? Each way (Including night time around 9pm~10pm)
3) Is it hard to get taxi at night time around 7pm~11pm?

Beatrice