Make sure you select the refundable deposit. There are two published fares, the base rate and the with Have It all. Most often HIA comes with refundable deposits. There is a third non published fare call Advantage fare. It is slightly higher than the base fare but it is refundable. One gotcha that occurs sometimes. If you pay for the cruise in full that could be considered final payment and penalties begin even if it is before the overall cruise final payment date.
if your TA is familiar with Princess they probably know Holland very well too