Live Feed from Video camera to Projector

[Chloe-May Wilks]

Hi,
I am trying to figure out if I can set up a live feed from the a different area without having cables as it is for an ANZAC Day Parade my school is holding. We are trying not to use any cables as there are 1800+ kids and anything can happen to the cables. Please help me. I have till the 20th of April to figure this issue out.

 

[ruinexplorer]

While not the least expensive, Teradek is used by many for this type of situation. What other equipment do you have and what is your ultimate display goal?