This assumes:
1) Attendance is based on butts in seat opposed to actual ticket sales,
2) Most on this board will have access to multiple unused tickets as the season progresses (that is a given).
ADVICE:
Enter Ford Stadium a few minutes earlier than normal through gate 6. Take leisurely stroll through concourse, exit Gate 4. Using 2nd set of tickets, now enter Gate 2. Enjoy the game and appreciate the fact that your butt has now been counted twice.