Originally Posted by
sethb
I've never had a problem using a boarding pass to enter the wrong terminal. I think once I was even asked, and just said I was going to visit a specific club while I waited for my flight.
Same! I do this mostly in MIA (Miami). I'll go through security to the Delta terminal for Sky Club usage, then leave and go to the AA terminal for a flight to South America. Usually, the person scanning the boarding pass asks if I'm aware that I'm at the wrong terminal, but they always let me through when I tell them I'm just visiting the Sky Club.