Is the seat number respected in the stadium?

Hello guys, in February I will go to the stadium for the first time. I will be on vacation in Miami and my plane lands 3 hours before the game, so it is likely that I will arrive around game time. My question is whether when I arrive at the stadium it is likely that someone has taken my seat, because the truth is I will be going with my family and I don't feel like fighting for seats. A hug for everyone :)