I'm booked on a Eurostar from Lille to Brussels (ie it's a London to Brussels Eurostar, and I'm getting on it after it has crossed the channel)
The PDF ticket that I've received from Eurostar says I need to be there a minimum of 45 minutes before. I have a feeling that this is just the same ticket template as for a trip from London, and it doesn't apply. The last time I was in Lille Europe station, trains from London would arrive on the non-secure platforms while trains to London would use the secure ones.
Do I need to get to Lille Europe station 45 minutes before I catch my train? I wouldn't need to if it was a normal SNCF train from Lille to Brussels.