I am going on a short tour from Bangalore to Hong Kong and my flights are with Thai Airways which go via Bangkok. Hong Kong provides visa on arrival for Indian citizens, and so does Thailand even though there is no requirement for me to get a visa there as the connection time is less than two hours.
So, essentially I need to travel without any visa - only flight tickets + hotel booking. My new passport issued in 2012 has a blank second page - so it is a ECNR passport. The older one issued in 2002 said "ECR required except for travel to Pakistan, Bangladesh, etc....". I will also be travelling with my wife who a ECNR passport issued in 2012.
My question is - Are there any documents to carry while travelling? Is there any reason why the immigration officer in Bangalore can ask for additional documents before allowing us to pass?