1) My daughter was 6 and the best thing I brought was a little blow up tube...she could hardly touch in the pool so that saved us from having her hang on us!
2) I bought a 20.00 waterproof case on ebay for my digital camera and it took amazing pictures- My daughter had fun taking it in the pool and in the ocean. It also helped with the humidity- peoples cameras were not working because in August it was very very humid!
3) also we bought a 10.00 snorkle set at home and brought it with us. It allowed her to snorkle and take the pictures with the camera... Kept her busy for hours...... Even my fiance got a kick out of it-