our plan from Kawaguchiko to Grinpa

We planed to use Fujikyu Bus from Kawaguchigo (11AM bus) to arrive Gotenba at 11.50 then find TAXI 30mins ride to Grinpa park

Left Grinpa park with their Bus back to Gotenba to catch Ariake Train back to Shinjuku.

My question is ..
1. How much dose it cost for 7adults and 2children for 30mins taxi ride to Grinpa park.

2. Is the LE Bus from Kawaguchiko to Gotenba still available or have to reserved in advance or not? We can't their japanese website.
http://bus.fujikyu.co.jp/highw/index.html

Thank you in advance,
: )

Left Grinpa park with their Bus back to Gotenba to catch Ariake Train back to Shinjuku.

What is the Ariake Train? Do you mean Asagiri?

1. How much dose it cost for 7adults and 2children for 30mins taxi ride to Grinpa park.

If the children are small, your group might fit into two taxis. Otherwise, three might be required. The one way cost is around 5000-6000 yen per taxi.

Is the LE Bus from Kawaguchiko to Gotenba still available or have to reserved in advance or not?

LE = limited express? Yes, there are currently four limited express buses per direction. Two operate every day, the other two only on weekends and busy travel periods. Reservations are necessary for these buses. You can make them in advance or at major bus stops before boarding (assuming it has vacant seats). Here is the timetable in Japanese:
http://bus.fujikyu.co.jp/line/jikokuhyo/01.html
��� indicates the daily limited express buses
����� indicates the limited express buses that run on weekends and busy holidays only

: )