If you're here now or will be in the near future, I will have a free air mattress available for pick up at ASMo tomorrow or I will leave it at the desk for you to get at check in. I had it shipped from Amazon and my daughter has slept on it comfortably for the past week. It has a battery operated pump, but the Amazon description said it took "D" batteries, so that is what I ordered for it, but when it arrived, it actually required "C" batteries. I easily used a hair dryer to blow it up most of the way and then used my lungs for the rest.