Yes, click "Add a stop" in the search form to add several pick-up points.
Yes, this is a popular combination; the coach drops the group off at the landing stage and picks everyone up there again afterwards.
No, it is a price estimate based on your route and group size, not a confirmation of availability. The coach company itself confirms the final price and availability after you have sent a no-obligation booking request.
No, requesting a booking is always free and without obligation. You are not committed to anything until the coach company has confirmed the final price and availability and you agree.
Rotterdam and 40 people are ready. Fill in your destination and your day.