I'm not sure what to do! We're flying Spirit airlines out of Detroit at 7:45am. I've book a room with parking included. How does this work? What time do we have to be at the airport? Do we all have to be there that early? We don't have assigned seats or tickets, just a confirmation number from cheaptickets.com. I have to confirm 24hrs. before flight and I'm not sure who to call. I don't want this to be a fiasco because then I'll have to listen to a grumpy husband. Please help me!