Good morning, all - I am a USA passport holder who recently booked an itinerary with China Eastern (MU):

NRT-PVG-DEL on the outbound, approximately 5 hours in between flights
return DEL-PVG-NRT, approximately 45 hours in between flights.

Based on everything I've seen, I should be fine to get a Transit Without Visa (TWOV) stamp at PVG on my return trip since I will be there less than 48 hours (although will be spending two nights in Shanghai).

I am quite nervous about dealing with airline staff at the MU check-in counter in Delhi... do you think the China Eastern staff there will be familiar with this transit exception?

If not, is there anything I can do besides bring my itinerary, e-ticket invoice, hotel reservation, and printouts about the policy from Timatic and China's Embassy website? My flight from Delhi leaves around 3 AM so I will likely show up at the airport well in advance of the flight...

Also, will I be getting the same stamp on my outbound or does China Eastern now have a way of remaining airside during a connection at PVG?

One final question - would I be able to buy a high-speed rail ticket to say, Hangzhou, to go sightseeing for the day or will I have to stick around central Shanghai?

Your expertise is much appreciated! Thank you!