Aqualand is for the part of the trip that wants motion rather than another museum. It adds a practical, hands-on option to Playa de las Américas, especially if you are travelling with children, a group, or anyone who needs a change of pace.
Prices, booking rules, and seasonal opening can matter more here than at a public monument. Check the operator's current details before committing, and leave enough slack in the day for transport and weather.