They check! I once had to go thru because I was on the wrong side toget my free promo item. They let me cut thru but I was escorted the whole way! Also you can be in the Open area but not the suites! It can be hard to find a seat during rain delays and really hot days!
I wasn't saying to sneak into a suite.... Just the the Open "club" area...
And you cannot just walk in there, what did your ticket say?