The plan would be to upgrade to business class for the MSP-MKE leg just so 3 people could get a "taste" of a nicer seat. This is how I look at it.
2 Checked bags = $40
Original Seat Fee = $6
Total $46
Upgrade cost MSP-MKE $49
Total net cost to upgrade is $3. Sounds like a no brainer to me. We have 9 people going, so would look to upgrade to 3 people, get 6 free bags and let 3 of the 4 adults enjoy 45 minutes in business class.
Airtran customer service has told me I can just upgrade the first leg of the flight and the luggage would be free for both legs of the flight......
Duds