Have you been already or are you going and planning the pictures you are taking? I too scrapbook and we are going in Feb - we are very excited. I have already started to scrapbook our trip with the prep pictures and the kids pictures at christmas when they found out. I have looked at some scrapbooking sites for ideas for pictures - you might look for some theme books. IF you stick to a few colors it might be cheaper - and keep the pages simple for the most part.
Helen