I feel like this is kinda a stupid question, because I've been through CUS enough that I should know this, but when does boarding stop for the LD trains? I know they make announcements like tickets are sold up to 10 minutes to departure and boarding up to so many minutes before departure, but I can't remember. I'll be in a sleeper so getting there early from sightseeing isn't too much of a concern since I'll be using the Metropolitan Lounge and well I have an assigned room so its not like I need tobget a good seat lol