Couple things. Make the kids buddy up. It is a great place to explore and see everything, but make sure all the kids have cell phones (and chargers, there are places to plug in if they absolutely need to) and they have the mentors phone numbers in there.
Then get some comfy shoes cause there is a lot of walking. Oh and Ibuprofen... lots of ibuprofen, probably the most fun getting a headache I have ever had.
