Our Traditional Grand European tour specifically states we will board the Eurostar train to travel to Brussels from London.. .. ..and we are to return to London, according to the tour book, via the Eurostar. But after reading nursesue's Day 3 log on her TGE tour, she says they traveled on the ferry instead of the Hovercraft.

Does Globus switch the Channel transportation often, or can we assume we will be on the Eurostar train?