In past years, I used to have a big Home Opener Theme Party and buy a big block of group tickets. Attendees would dress up in the theme and obviously all sit together. Past themes included:
Hillbilly/Redneck (by far the most fun and most creative attire, I bought a box of Billy Bob teeth to pass out)
Mardi Gras (beads and masks)
60's (T'Dies)
Tiki Bar (Hawaiian shirts, leis, grass skirts, bikini tops)