Yoshi P. strongly implied that the WoL is going to physically travel there by using some convenient plot device (Likely that beacon the enigmatic figure told us to locate) to amplify their Echo so they can pass through walls between the Source and the First (Which is basically what the Ascians do).
It's more likely that the Scions that have had to resort to such measures to function at the First due to their lack of Echo forcing their physical bodies to be left behind in order to travel there.