Back-offs, barrings, etc.
Okay, I've been using the terms back-off, barring, etc., somewhat loosely, since the original poster probably doesn't understand the difference anyway.
I've played bit over 700 hours since I "graduated" to Green Chip levels slightly less than two years ago, almost entirely single and double deck games. In that time, I've been flat-bet once, placed on a non-flat betting restriction once, given the "you're welcome to play any game except blackjack" once, and asked to leave (but not trespassed) once.
As I mentioned above, tracking is a formidable weapon for avoiding heat. Few things will make a pit critter lose interest in you more quickly than several max bets right off the top.