These threads are always interesting. Here's another issue nobody is mentioning.... the turf. Have you been on turf at 1:00 pm when it's 90 degrees? More like 110 on the turf. You will also need staff there to keep people from bringing food, beer, & drinks on the turf if you open the field. Lots of spills and you're changing out there all over the place. Just throwing that out there.
Now I agree on having watch parties at your sponsors establishments.