For sectionals, EC can fit three mats across WITH the lower-bowl basketball bleachers all the way out. The nationally ranked seating capacity is listed at around 8,300, so even if all the hoops bleachers were pushed all the way in (I'm guessing they just push one side in so as to maintain the PA/press tables) and 4-6 mats laid out, we're still talking much more capacity than LC or Merrillville at full no-mat/basketball strength.
Fire Marshall Bill will have no beef here.
Agree with indianmorg that it's not the Bahamas in terms of desirable entertainment/shopping spots, especially hotels (northern Hammond will earn some of that economic impact), but quaint Whiting is just up the road with a nice downtown area, including a small movie theater, and there are two McDonald's within a mile or two, Subway, 2 BKs, gyros joints, pizza, plenty of sitdown authentic Mexican places, etc. And for the over-21 crowd interested in "gaming" there are options *floating* around nearby as well.