I am going to be in VN next month and have booked a tour to Angkor Wat with a tour company in VN.

I had to book and pay business class for the outbound leg (because economy was full), but book and pay economy class on the inbound leg. One of the tour companies said that VN Airlines would not allow them to do this (ie booking J one leg and Y the other leg) - it has to be J return. However, the tour company I went with said they could do it by ticketing me 2 separate tickets (one for J and one for Y).

I had BAD experience with VN Airlines before on one of my previous trips (long story), and am worried that the VN Airlines made up rules at the last minutes. So, I want to be able to check my bookings. I went to checkmytrip.com but VN Airlines is not on Amadeus so I could not check. I remember that there is another site that I might be able to do this, but could not recall what it was. Could someone please help me on this? Also, has anyone any suggestion as to how I can check to make sure that the bookings are valid and my seats are confirmed! Many thanks.