Yeah, tailgaters are mostly people with money, so we tend not to be on the young side. Sorry you thought it was lame. Us old folks like to share food, have some drinks and talk to each other.
You were probably made uncomfortable by your surroundings because everyone wasn't staring at their phone, playing Pokemon Go or playing with a bunch of people we'll never meet in some online XBox game.
Feel free to avoid the area in the future to avoid all the lameness. You may now return to your cool, unlit room and your video games.