Japn itenerary 4 days trip?

Hi we're arriving japan next week for a 4days trip
will this itenerary be possible?
Day 1 chubu airport to kyoto station to hotel near tambabashi station
go around kyoto (kinkakuji/fushimi inari/arashiyama/gionmachi)
Day 2 hotel to osaka (universal studios)
Day 3 osaka tour (osaka castle/abenoharukas/sumiyoshi shrine/shinsekai/dohtonburi)
Day 4 from hotel to nagoya for morning tour (nagoya castle/yamazakiriver/market day then head to airport for 7pm flight

would there be a chance we can witness snow from all these areas?
is it a good or ideal itenerary for japan?

What are some things to do near Beijing Airport?

I have a crossover flight and I ll be stuck there for six hours and I would feel like just waiting for that long so if you know of any places close by, that I could go to, to pass the time please let me know.

Thanks heaps!

Added (1). *wouldn't feel like just waiting for that long - sorry for the typo.

How easy is to buy a ticket by the internet?

What are the steps? And the hackers?

2-What were the experiences you had with airbnb, uber, lift, etc? What's a good lift site?

3-How to deal with the long lines in the airport etc?

4-Is worse to land in not prioritary airports? As Luton, Newark etc.

5-What to do when a country ask vacins?

6-Any site that you can invite someone to travel with you?

7-Some Europeans airlines do not pay hotel, restaurant etc if happens something bad, as weather etc.

8- Did you have a good experience in poor countries?

Added (1). So-called poor countries.

Is this itinerary possible for a 4 days trip to Japan?

DAY1- Chubu Airport->Nagoya Station->Kyoto Station->
checkin in hotel->Kinkakuji->fushimi inari->GIONMACHI->checkin in hotel-
DAY 2-Kyoto station->osaka station->USJ->OSaka Castle->DOntonburi->OSAKA STATION->TAKAYAMA STATION->checkin hotel
DAY 3->TAKAYAMA STATION->SANAMCHISUJI->SHIRAKAWAGO->TAKA… STATION->NAGOYA STATION-> checkin hotel
dAY4- free time morning, flight at 7PM to Mla

is there any chance we can witness snow in these tourist spots this January 29-Feb2?
any recommended budget train rides?