I'm sure some of you fly often and carry on baggage. I have a question. My daughter and I are flying to Tucson this month for a softball camp. Checking her bat bag, but we want to carry on some bags. Typically, how many bags can you carry on? We each have a small bag for change of clothes. She has a small satchel type purse for her camera, itouch and a few other things. I'd like to bring my Domke F 803 so I can bring iPad and two cameras. Can I bring the F 803 and put it under my feet? Sorry about the noob question, but I haven't flown since 1999!