Help, volcano, stuck in Europe

And if you are going to do it, the website you need is:

http://www.stenaline.co.uk/ferry/rail-and-sail/holland/

The dutch flyer ticket. However, this is the most annoying online booking process ever. Ring 'em up.

Fuck me, you're not far off there.
I've booked a flight for Thursday evening and want to make sure I don't lose out on a ferry crossing, but that website is beyond a joke.