I just noticed OP was on Divina October 24th, and the port schedule did reflect she would/did dock at terminal B.
So @mafig, I would expect to embark Seashore October 29th at terminal E where it is currently scheduled. As to which parking deck to use due to your possibly disembarking on November 6th at terminal C, I would defer to morpheus.
I've read that MSC/port will shuttle people back to the garage near their embarkation terminal when this happens.