Parents: They are always going to go. You need to capture everyon else, and fans from the same league/area who would want to go.
Old folks: Many cannot go to the finals games due to the weather. Recall our HC mentioning in the post game interview a few years ago saying hi to his parents who couldnt come due do the cold.
Also: Families. Many kids are at the early season games and it starts to dwindle later in the season. Many are just not going to bring kids, and often times forces the parents to stay home as well, when the weather turns rough.
In a dome.....yeah. I can almost assure that will bump attendance, no doubt about it. I wouldnt mind watching more game this weekend, but I wont. Has nothing to do with ticket prices.......... I just dont want to sit outside for 7-9 hours.