I have never stayed at WL, but have stayed at AKL a few times (my favorite resort) and will give you a review of the pool. Pool is large (big enough to swim across for exercise), and has always been the perfect temperature
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There are 2 hot tubs, a larger one behind the slide with very pretty landscaping, and a smaller one next to the savannah. You can walk a few steps from the hot tub to look at the giraffes and other animals!
Slide is not super long, but is still fun.
There is a zero entry side of the pool, if you have little ones.
There are loads of lounge chairs in the shade and sun, both.
Mara, the fast food restaurant, is a few steps from the pool, so you can get lunch or a snack, etc. and eat at the pool.
There is a bar poolside, but I don't drink, so can't review that for you!
We find the AKL pool very relaxing and fun.