Sherry, Bud, Carol, Bing, Jan, and I will all arrive in Amsterdam on the same flight.
I have been checking into shuttle arrangements from the airport to the cruise port.
So far the best price I found is 70 euros for all 6 of us!
In case anyone else is interested go to www.airportstaxitransfers.com
Thinking if we plan on something around 15 euros per person we should be able
to also cover the tip.

08/18/2012
Followup:
I went ahead and booked the 6 of us shuttle service from the Amsterdam airport to the cruise ship port. Since there is a 4 euro processing fee our total was 74 euros. Don't want to mess around with the euro to US dollar so went ahead and booked it.