We visited both in one day, but could only use it on one round at each place on any given day. If we wanted to play two rounds at the same place,we would get a 25% off of second round instead of being able to use park hopper plus.I believe both are included, but you cannot visit both on the same day. Did you buy the Park Hopper Plus tickets? I thought Disney didn't sell the Park Hopper & Waterpark Fun & More tickets anymore and changed the name to Plus.
https://www.undercovertourist.com/blog/disney-park-hopper-plus-option/
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