Transportation from Jiuzhaigou Valley to Jiuhuang Airport

Hi everybody,

We'll stay at the Angelie Hotel on the first week of April and we'll have to go to the airport(We'll arrive there by long-distance bus, but we would like to leave by plane).

For this, I have 2 questions :

- About the taxi : we'll be 4 people, everyone of us having one big luggage + backpack. Is there any taxi or small bus which could carry all of us ? Taxi and these small buses if any still cost about 200 yuans per taxi/bus ?
The taxi/small bus is easy to catch without booking in advance ? Should we wait for the taxi in a special place ?

- About the shuttle bus : I only found information shuttle bus leaving airport and going to the scenic part (Huang Long or Jiuzhaigou Valley), 45 yuans per person. About the schedule, they correspond to the airplane arrivals.
But ... What about the opposite travel ? From the Valley to the airport ? Is there any regular schedule ? Is it a reliable transportation ? Is it still 45 yuans ? And the most important : where to find this shuttle bus ? I've found many different information :
"Jiutong bus station" which is next to the Jiutong Yangguang Hotel.
"Jiuzhaigou Tour Bus Center" no idea where it is ...
"Goukou Bus Station 沟口汽车站" no idea where it is ...
On Baidumap, i've found about "Jiutong Keyun Fuwuzhan" 九通客运服务站.

Thanks a lot for your help and clarification :-) !