Takayama Hokuriku Pass

Our route is NGO - Nagoya - Takayama - Gokayama - Kanazawa - KIX and we'll buy Takayama-Hokuriku PASS
First, We plan to take Ltd Exp (wide view) HIDA on Friday end of Nov from Nagoya - Takayama. The question are:

1) How can I reserve the seats on this HIDA Ltd Exp in advance?
I'm just worried that when we arrive Nagoya station on that Friday and the train will be full

2) From Osaka to KIX, does the Takayama pass cover Haruka airport express?

Thanks for your help

How can I reserve the seats on this HIDA Ltd Exp in advance?

I am afraid it is not possible. Your first opportunity is at Nagoya Station. In case reserved seating is already sold out (and I think there is a good chance that it is not), then you can use unreserved seating. Nagoya is the first station along the journey, so by showing up early on the platform at Nagoya Station, you should have good chances of getting a seat. If the train is not there yet, line up at a mark that indicates where the unreserved car's doors will be located at.

2) From Osaka to KIX, does the Takayama pass cover Haruka airport express?

Yes, but only unreserved seating. More details:
http://www.japan-guide.com/e/e2361_takayama_hokuriku.html

Thank you very much Uji.

I have a couple more questions please;
As we are staying at Ainokura, but the buses to Kanazawa stop at Gokayama Suganuma;

1) Which bus time table (between Shirakawago - Suganuma - Ainokura) is the correct one?
http://www.gokayama-info.jp/wordpress/wp-content/uploads/2014/04/4e2b5...

And this one
http://www.gokayama-info.jp/en/img/access/english.pdf

2) if the 2nd timetable is correct (which I think), I'll take a bus from Ainokura at 10.48am and arrive Suganuma bus stop at 11.03am.
So, is it possible to walk from this bus stop to catch the bus to Kanazawa other bus stop at the car park in 12mins?
(Bus to Kanazawa leave at 11.15am)

Thank you

This is the current timetable:
http://www.gokayama-info.jp/en/img/access/english.pdf

Also available here:
http://www.japan-guide.com/bus/gokayama.html

The two buses use the same bus stop in Suganuma, so 12 minutes should be plenty.

Thanks again
I'm still confused about the two bus stop locations at Suganuma.
From Japan-guide.com,
1) For the bus from Gokayama to Kanazawa. (As described in the link below around the end of the page), It says
"Gokayama Gassho no Sato" bus stop at parking lot near Suganuma Village"
http://www.japan-guide.com/bus/shirakawago.html

2) For Kaetsuno bus (Ainokura-Suganuma), it says;
Suganuma:
"Suganuma bus stop is located along the main road at the entrance to the village"
http://www.japan-guide.com/bus/gokayama.html

So, I'm really confused whether this 2 bus stops are at the same location or not.
And if not, how long does it take by walking between these 2 bus stops?

Thank you for your help

They seem to be different locations. (From the map in this link)
http://www.japan-guide.com/e/e5954.html

But not so sure. Need someone to confirm

Have anyone been there recently?
Are they the same bus stop?
Please recommend me. It really effects my schedule.
Thank you very much