Are there floatation devices for small children? I have a 1 year old and need to know if I need to purchase something for him elsewhere.

yes.

There are the regular strap kind of life vest in two sizes for kids and one for adults. There are also the type that go across the chest with arm holes and strap in back. I did not see anything rated at less than 20 lbs. There is also a separate toddler area that is enclosed.

You will find them right at the entrance of the pool/waterpark area, free of charge. You will also find towels at the right (close to the wave pool). Hope it helps.

When you enter the water park, an attendant will measure the height of your child and issue them the appropriate color wristband and complementary life jacket. Then when they go to ride various slides, the wristband indicates their height so that each attendant well let them on the slide.

Yes there are. They have various sizes.

There are life vests of many sizes, but I don't know if there will be any particularly small size. Perhaps they would reserve a particular size for you if they know in advance.