Get there early and you can scope out which area has the table and/or shade that you want. Those area's go quickly. We like both BB & TL but prefer TL. Our group loves the wave pool at TL and it has a few thrill rides, it's amazing, we can spend the entire day there. BB has more hard water rides, and the wave pool is not the same type as TL. You can bring in a cooler at either park if you like or are able, I find it makes it easier for water access and snack like fruit etc., the only rule is no glass bottles allowed.
I highly recommend swim shirts for all that burn easy. Florida sun is brutal and the kids and even adults don't mind wearing them, you can be out all day, in and out of the water without having to worry about sun screen except for your face.
Lastly, just as you enter the main parts of each water park, look for the cart that sells warm mini donuts w/ glaze or chocoloate sauce dip. Agreat way to start the day. They sell them by the dozen! Yum.
Have a wonderful time, we'll be there second week of June!