I will be traveling with my two teenagers to Las Vegas. I used mileage to try to upgrade to first class. When I did this they put us on a waitlist and changed the one itinerary to three separate ones. I have a CO mastercard so I would not have to pay for bags. Now that we are under three separate confirmation numbers will I have to pay for their bags? Doesn't seem fair if I do as I never paid before. Also at what point do you find out if you have been upgraded? Is there anything that I should be doing? I am new to all of this upgrading and reward travel. We go on a lot of vacations and the mileage has been building up so I thought for a five hour trip it might be good to upgrade. Thanks for any info.