Best $ options for Morey's Pier

OK, I know that I will be dropping a lot of $ on the boardwalk but looking for advice on how to get the best bang for my buck.

We will be staying for 6 nights later this month. In our group are my 11 yr old son, my 21 yr old dtr and her BF, my sister, my husband %26amp; I.

I guessing the kids will want to do at least 2 trips to the water parks during the day %26amp; visit the boardwalk a few times at night. The adults will be happy with 1 water park trip %26amp; then just do a few rides.

I appreciate any help!

Thanks!