There're 6 of us going to Millennium Hotel Xiamen.Is there a big taxi van to fit all of us & how much

I'm afraid not. A taxi in the city can accommodate at most 4 passengers.

I suggest you take airport shuttle bus Lundu Line to its terminal at Lundu (Hua XIang Yuan) and then your hotel is around 1.2km away. You can walk there by asking the local people about the directions.

Thank you Ms Helen for your kind reply.

how much would a normal taxi for 4 passengers cost from the airport to Millennium Hotel XM?

The taxi fare is around 50 to 60RMB.

Your response is very helpful Helen! Thank you so much!! :)