Whew – on the train back to London now after the overnight ferry.
The ferry was a fun experience, but I think I’d probably go with Eurostar next time. Aside from it just being good fun, my rationale with the ferry was that going overnight I’d get more time each day and save on accommodation, but in reality you spend so much time getting to/from the ferry terminal, and you get woken up so early on the ferry anyway you could just as easily get a really early train and it’d work out roughly the same.