The Waterparks & Sports option provides as many "plus" entries (waterparks, mini-golf before 4pm, foot-golf, Oak Trail 9-holes) as you have "days" for a theme park. You can use them on same day or different days; just as long as used within the stated ticket use window.
For example:
a 3-day theme parks + waterparks/sports ticket includes:
- 3 theme park days. Enter anytime during the day (if prior to Jan. 9th you need a theme park reservation). You didn't mention the park-hopper but that would allow ability to "hop" to another theme park after 2pm if desired.
- 3 "plus" entries for waterparks and sports (waterpark, mini-golf, foot-golf, Oak Trail 9-hole). These are completely separate from the theme park entries. They may be used on the same dates (got to a waterpark in the AM then a theme park in the PM) or on completely different days as long as it falls into the ticket validity window
A 3-day ticket is valid for a 5-day window. So you could do 3 theme park days and 2 days at waterparks plus one additional option -- maybe mini-golf on the same day (before 4pm) as a waterpark. Note that a 2-day ticket only has a 4-day use window. Tickets with more theme park days are valid for longer windows.
So with that 3-day ticket you might do:
Day 1: theme park
Day 2: waterpark + mini-golf (very easy to do with Blizzard Beach and Winter/Summerland)
Day 3: theme park
Day 4: waterpark or foot-golf
Day 5: theme park