They do have them. However the price has gone up to $25-30 per locker if I remember correctly.
Yes they do have them in certain parts of the park. The ones in Soak City are $15/20 depends on the size, then you have the ones by some of the roller coasters which charge you by the hour or two because some rides they won't let you get on with your stuff. Then you have the ones when you scan your tickets and walk through at the beginning of the park where the food court is, those are all day locker rentals for $15/20 for the whole day
They have them for rental/purchase.
Yes, they have lockers, bathrooms, and changing rooms.
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