The Dutch, who sealed a place in the finals after winning all their qualifying matches, carried that form into their World Cup warm-up games and will kick off at among the favourites to finish as world champions in a month's time.
Van Marwijk told reporters at the Dutch training base at Wits University in Johannesburg: "Yes, we did excellently in our warm-up matches, but we are taking nothing for granted against any opponents in the World Cup.
"We believe we can do well, and now we must go and do it."
"Every striker is judged on the goals he scores, but I want to give more to the game. I'd be happy with more assists than goals," he said. "That may sound odd, but that is my ambition because it will make the team better."
Netherlands' strength lies in their attack, with the 'Big Four' - as the Dutch media call them - of Van Persie, Wesley Sneijder, Rafael van der Vaart and Robben, when he returns from injury, the key to their success.
"The players are being realistic but people in Holland and the media think that they only have to turn up and pick up the trophy," he told reporters.
"Everyone expects them to beat us quite easily and so we have nothing to lose on Monday, which can result in a surprise."
"It's all about how you play on the day," he said. "That's the name of the game at the World Cup. You are only playing for four weeks and you have to maintain your form every day."
Bendtner's place is likely to be taken by Jon Dahl Tomasson or Soren Larsen while first choice goalkeeper Thom
