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Cape Cod Bumper Boats, Zip Line, Baseball Softball Batting Cages

We are looking forward to 2016 & you'll love our new Zip Line over the pool!

 This new attraction is READY! We will be open Friday, May27th at noon. Saturday/Sunday/Monday we open at 9:00am for the Memorial Day weekend!

Please email

508 430 1155


Grand Slam Family Entertainment

Baseball and Bumper Boats

322 Route 28, Harwichport, MA

508 430 1155  


supraboatNew This Year - Zip over the Bumper Boat pool!

Welcome to Grand Slam Entertainment!

The Cape Cod home of premium Baseball & Softball Batting Cages and a huge crystal clear Bumber Boat pool! You can spray your friends - but watch out! You can get wet from any angle!

Our Batting Cage Features 9 Master Pitching Machines including slow & fast pitch softball as well as baseball speeds from 80 mph to wiffleball for kids under 8 years old! Check out our money savings coupons in the Kids on the Cape book.