Be prepared to move, sweat and be tired in an hour or so. Honestly this could be considered physical activity for the day so why not make it fun too.
Everything in between. Some activities are physical while others require mental ability to get through they are all fun but also are better the more you have in your group.
Rides, slides and good times. Honestly I love theme parks but if they have more out there let me know. Theses are pretty well known.