I used the ship for a long weekend in the Netherlands last year. Out Friday night, back Sunday night.
But what seems to let it all down for foot passengers is the rail connections at either end - No longer is there a "boat Train" from LV St to Harwich or a connecting 'Boat Train' from Hoek-van-holland to Amsterdam. Or indeed a through service to Koeln.
I remember in the 1980's regularly using the 09.35am from LV - the 'boat train' to Harwich Parkstone Quay - IC stock with class 86 - with first and only stop Harwich Parkstone Quay.
Now you are expected to take either an IC service from LV Str to Manningtree and then change to the 'branch line' service or a commuter 'stopping train' from LV Str.
When I took the IC option on a Friday (19.00 LV Str) the train was full and standing from LV Str even in 1st class - lucky I had a seat reservation
At the Hoek end the EMO to / from Rotterdam is just - well 'old and dirty'. - with apparently no 1st class or at least if it does, the NS inspector didn't enforce it.
Coming off the Night Crossing from Hoek to Harwich it is possible to make an earlier 'connecting' train from Harwich to Manningtree so allowing changing into the IC Norwich -> LV Str service. - arrived LV circa 08.30am
But the platform staff at Harwich seemed quite keen to direct me to the 'through to London' stopping train.
In Summary it seems as if the Boat company encourage foot passengers but the railways at either end couldn't give a toss.
Just remember the old saying: Harwich for the Continent - Frinton for the Incontinent