Bride2b...
My advice, based on our August trip would be NOT to buy the photo pckages in advance.
We traveled with my husband, our two teens and me. We did not hang out at the kids pool, kids activities or kids beach. Those seem to be the locations where the photographers hang out -- in addition to the staged photos where you stand in line (but see note below about those).
We bought the 10 for $85 package (debated about the 15 but fortunately went for 10). By the end of the week, there had only been 11 photos taken of us in total and we didn't love all of them. There was one of family I didn't like, one of son he didn't like and a few at the character breakfast. None taken of kids at teen activities (and they were involved in ALL of the teen activities), only a couple at dinner other than character breakfast.
We found out later that if you do not pre-buy the package but, at the end of the week have 10 (or 15, etc) pictures you like, you can get the package price. They come along and pick up photos every day or so but we found that if you find the photos you like and put them all together on the rack, they won't dispose of them.
Also, a lot of the staged photos (i.e. that you stand in line for), are 8 x 10s - they aren't part of the package. We didn't know that and ended up buying more 8 x 10s than from the package. We LIKED the 8 x 10s - didn't like the package.
Just our recent experience.
Best wishes in wedding planning and marriage!