We have used this crossing five times so far and will do so again this year. Living on Teesside means this ferry is only 45 miles from home compared with 362 to Dover, a benefit as I am the only driver in the family, also we do not need overnight stops or en-route meals. Check in is around four in the afternoon so we can get the 'van out of storage and take our time packing it before a leisurely drive to the dockside though, coming from the south, I do allow time for the Tyne Tunnel. Ships time is continental time so the crossing does not 'rob' you of driving time when you land. Food, well take your pick from a range of options though alcohol is at Scandinavian prices. We have had one crossing in a noisy cabin so we upgrade to Commodore Class; costs more but we are retired and we are on holiday, breakfast is then included and on this crossing there is time to eat it which means you start your day well fed. There is a range of onboard shops, various bars and a cinema. Being retired we are free to choose to travel on caravan goes free days. Now wether your 'vans length is a problem you would have to check that out but they do ship some pretty large commercial vahicles.
So have a look at the prices on the dfdsseaways web site - where it states van length 'no metres' indicates a free 'van day but the sooner you book the better - prices change according to demand. Once ashore you are only have about ten miles to the motorway system - assuming you want to use it.
And if you do go make sure you de-rig your extension mirrors overnight and only put them back on just prior to landing. They seem to be invisible to the pedal cyclists moving forward to where the bikes travel!
As you may have gathered I am enthusiastic about this crossing and, no, I do not work for D.F.D.S. - never have done and, at my age, never will do.