Once you find STAGE 1, please read the directions and note the coordinates for Stage 2 and partial coordinates for Stage 3. Next, head over to Stage 2. Stage 2 is a VIRTUAL stage. A boost or jump will be required to discover and interact with this stage. If you're capable of doing a pullup and at least 6 foot tall, you should be able to discover and manipulate the stage without issue. If you have poor upper body strength and/or are a bit on the short side, you might need the assistance of another cacher(s) or object (mushroom?) to get a big enough boost.
After finding STAGE 2, you should have the the complete coordinates for STAGE THREE. The third and final stage (the actual cache) should be an easy find. No jumping required.
Last, but not least, please do attempt to do this cache at night. Indeed, the terrain is a bit trickier than it looks back here. As for the kiddies, I think most ages 10 and up should be OK to take along for this one. They might even come in handy. All kids are different though.
Good luck! Have fun! Happy caching!
Congratulations to ibepaul for FTF!