Nagoya City (in Aichi Prefecture) and Takayama City (in Gifu Prefecture) are in Chubu Region.
The other places in your current itinerary are in Kansai Region.
Will you visit also Shirakawa-go (in Gifu Prefecture)?
http://www.japan-guide.com/e/e5950.htmlI suppose Kintetsu Rail Pass wide has seasonal editions, presumably because facilities where a discount is given may vary. (Unlike Kintetsu Rail Pass wide, Kintetsu does not mention a specific date regarding validity of Kintetsu Rail Pass (normal version), to which sightseeing facility coupons are not attached.)
[Accesses from and to KIX]
Airport access tickets of Kintetsu Rail Pass wide can be used outside the 5 days of validity of the Kintetsu part.
However, you can travel by JR from Kansai-airport to Tennoji at 1030 yen with a ticket in a one-way ICOCA & Haruka package; and if you head from Karasuma-Gojo in Kyoto City to KIX, purchasing the above-mentioned Kanku Access Ticket (sold at 1230 yen) sounds better than paying on regular tickets to get to Namba + an airport access ticket of Kintetsu Rail Pass wide.
[From Osaka to Nagoya]
The fastest way to travel from Tennoji or Namba area in Osaka City to Nagoya City requires roughly 1 and a half to 2 hours, which is mainly by JR Tokaido Shinkansen (from Shin-Osaka to Nagoya).
If you are OK to travel a little slower, you can take a Kintetsu Limited Express train from Osaka-Namba to Kintetsu-Nagoya, which requires roughly 2 to 2 and a half hours.
A Kintetsu Rail Pass (normal version) pays off with this Limited Express ride only.
From 19 Dec to 23 Dec, should I change my hotel to Namba/Dotonbori area? Well, if you use Kintetsu to get to Nagoya City, Namba area sounds better than Tennoji area to start from.
[Kobe trip]
.. (anonymous):
Or instead of Kobe stay someplace different such as Arima Onsen. Arima Onsen actually is in Kobe.
Kobe is famous also for night views. (And, I suppose in December Kobe is usually free from snowfall and windstorm.)
Your Kobe hotel and Shinkobe Station on Kobe Municipal Subway Seishin-Yamate Line are in the same complex, which is just near Shin-Kobe Station on JR San(f)yo Shinkansen.
You cannot travel by JR non-Shinkansen line to/from Shin-Kobe.
One lower-cost route from Tennoji to the hotel is
Tennoji
| [JR Osaka Loop Line (clockwise)]
Osaka
| [JR Kobe Line (westbound): Special Rapid: about 20 minutes]
Sannomiya
| [JR Kobe Line (westbound): Local: 10 minutes or less]
Shin-Nagata
--Making a short transfer--
Shinnagata
| [Kobe Municipal Subway Seishin-Yamate Line]
Shinkobe
--going up via elevator--
Ana Crowne Plaza Kobe: reception desk on 4th floor.
This route requires roughly 1 and a half hours.
The one-way fares are 1070 yen (800 yen for JR, 270 yen for subway).
Two subway lines are available in Shinkobe, so please pay attention to the name of the subway line.