The summary is:
Two friends, JJ and Mikey, build a water park in Minecraft using various blocks, commands and devices. They create four different types of water slides: a humongous one, a spiral one, a drop one and a tunnel one. They also make pools, chairs, parasols and an ice cream shop. They test each water slide and have fun. They end the video by inviting the viewers to like and subscribe and follow them on social media.
Here are the key facts extracted from the text:
1. A high dive and water you can drink were built.
2. Mikey and JJ plan to build a water park.
3. The base of the water park includes pillars and a platform made using commands.
4. The center part of the platform is made out of wood.
5. The ground was converted into blocks of quartz using a command block.
6. Four water slides are planned: a humongous slide, spiral slide, drop slides, and a tunnel type slide.
7. The humongous water slide has a staircase built with command blocks.
8. The spiral water slide has a spiral pillar with a two-block gap between supports.
9. Drop slides are built with red and green concrete.
10. The tunnel type water slide is colorful and has a special shape.
11. Pools for each water slide were constructed.
12. Water was poured into the pools using command blocks.
13. A TNT elevator was built to reach the top of the slides quickly.
14. Chairs and parasols were set up for relaxation.
15. An ice cream shop was built with various flavors available.
These facts summarize the main activities and features mentioned in the provided text regarding the construction of a water park in Minecraft.