These activities descriptions are from the resorts' pages (Resort Features link) within
www.mvci.com. I don't know if everything is represented for all of these resorts. You might find how Marriott describes the Orlando resorts interesting. You can look at typical room design, floor layouts and square footage along with the various villa and resort amenities. That might help you compare and contrast.
Horizons Family & Childrens' Activities:
Miniature Golf
Sports court
Table tennis
Kids Night Out
Rise and Shine with the Pirates
Lunch with the Pirates
Sports Night
Cypress Harbour Family & Childrens' Activities:
Sauna
Tennis
Sand Volleyball
Sports court
Minature Golf
Pitch & Putt practice Area
Bicycle Rentals
Paddle Boat Rentals
Bocci Ball Court
Shuffle Board
Ping Pong
Pool tables
Life Size Chess Set
Grande Vista Family & Childrens' Activities:
Beach Campfire
Songs, stories and s'mores
Fee: None
Compass Kids' ClubSM
Arts & crafts, games and lunch
Fee: USD 25
Kid's Night Out
Themed, arts & crafts, games, arcade time, dinner
Fee: USD 30
Teen’s Recreational Programs Available
Water Rockets
Build rockets with water
Fee: USD 12
Kid's Activity Center
Open from 8:00 a.m. to 10:00 p.m. daily
Table tennis available
Lighted outdoor tennis courts