stasheroo is right. no one who has expensive ticket package wants to lose their seats, especially this early in the season.
Its the guys who could only afford one game and picked this game in advance last year to go there with a purpose to cause trouble that do stupid things.
But, i have talked with people who have been ejected from the games in the 1st quarter in the past few years because a friend was mouthing off and some pushing and shoving started, and the whole group was ejected, even the mature guys who were sitting there trying to calm their friend down and break it up.
Tickets are more expensive here at the link than they were at the vet, can you imagine paying hundreds of dollars and getting ejected after 5 minutes cause your rowdy friend pushed someone. The security people do not ignore this stuff, people do get ejected, fined etc.
Now out in the parking lot you are on your own completely.