Yep. Also true. As long as you can get in through the gate you want.I've found you can essentially sit anywhere you want in the stand you have a ticket in. No one checks the tickets once inside, if an attenadant is being overly officious go to the next aisle. Plenty of spare seats in every bay, if the seat holder rocks up just move to a nearby free seat.
I've been allocated in the nosebleeds but haven't sat there once.