My sister and I are thinking about taking an Alaskan cruise in the summer of 2012. We need to save up for it so we need an approximate price point including a couple of excursions. I don't need to get off at every port to take a tour, but a few.

Forget airfare. Forget today's discounts that won't be there tomorrow. Please offer a general price with some justification plus any tips that you can think of. We just need to figure out how much we should be saving each month. I'm sure we could both come up with the little extra at the end since everything is more than you thought it would be, but where should we start?

Thanks!