I agree, it makes no sense
They "close for cleaning" certain areas around the same times every day, and have some areas reserved for activities so definitely always consult the schedule....and yes summer weekends til 4 doesn't help anyone cool off after the heat.
We go during the day for open swim. I go from 1-3. Check with them again for those hours. I think that they just do swimming lessons between 3-6.
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