I would suggest getting a size bigger but they do seem well made.
The soles of the "water socks" are very similar to shoes so they will hold up well at a water park or the beach. I would absolutely suggest these.
Adorable Blowfish Malibu Play-t for Toddler and Little Girls
47 Review
Capezio Girls 3800 Mary Jane Tap Shoe in Caramel - Size 11.5 M Toddlers
49 Review
DREAM PAIRS Little Aurora 03 Communion Shoes and Flats for Girls - Top Choice for Stunning Style and Comfort
49 Review
Slip-Resistant Crib Shoes for Babies: Robeez Soft Soles for Girls and Unisex Toddlers, Ages 0-24 Months
53 Review