You worry too much but as always your input is greatly appreciated . Even since I flew RTW in first class for 30k us airways you have been worrying . Lets just sit back and enjoy the hard work gone into this trip.

I used the site for the tickets from Brussels to Amsterdam nhsipped.nl . The site I used for disneyland to Cannes was voyages-sncf.com and it just states TGV prem's 1 e class on the ticket , should include meals and lounge access

I also contacted by phone nl and they said I can get on any train from Brussels but the Brussels midi is the closest for me from the Radisson blu royal I was told.