one year (1989) during a BYU game and the Utes around me then even snuck in beer to LES.
I was about 5 to 7 rows up from the field and here is what was thrown, etc. at me and my friend (we were teenagers at that time).
Baked Potatoes which used to be sold at LES.
Popcorn buckets. Popcorn used to be sold in Buckets at LES.
Beer cans.
Now remember, this was at LES back in the day and in fact was during the time that LES used to allow you to bring in outside food and drink but still no beer.
So you want me to believe that if Utes are willing to sneak beer into LES that they don't at RES?
You'd be amazed at how many six packs are smuggled into RES under the coats of Ute Tailgaters.
In fact, feel free to attend the Ute tailgating parties and simply ASK other Utes how to sneak in cans of beer and they all have their methods.
So from my first hand experience in LES in the Ute section, Utes do sneak beer into stadiums.