We have caught the Eurostar from London to Paris and Brussels a number of times, but until the day of our move we have never put our car through the tunnel.
We decided that because we had to be in tip-top condition on Tuesday that we would go by Eurotunnel and book into a hotel for the night. This was a wise move as the channel was pretty rough due to high winds, and I don't do lumpy sea any more. Compared to the ferry the tunnel is a lot more expensive, but it saves at least an hour on your trip. Another thing I like is the stated policy that if you arrive within 2 hours of your train's departure they will put you on the next available train. This compares favorably to the ferry companies who tell you over the phone "if you're late just turn up and we'll take you" but never put it in writing.
one Eurotunnel shuttle from another.
To celebrate our arrival in our new country we made a movie.