AeroBed AeroSport Minute air bed

My grandkids flew out from California to Colorado to stay with me for a week. I purchased two of the AeroSport minute beds for them to sleep on while they were here. The beds are advertised to inflate within a minute, which is the only reason I purchased them - I didn't want to have to struggle with inflating them. I actually received the beds promptly after ordering them, about a week before the kids arrived. Unfortunately, the first night the kids were here, I went to inflate the beds, only to find out that I had to charge the pumps for 24 hours first. Needless to say, I was very disappointed, as the kids had to sleep on the floor that night. Once the pumps had charged up, the beds did inflate in a minute and the kids had beds to sleep on for the rest of the week. They appeared to be comfortable for them with additional sleeping bags that I had also purchased. I think it is EXTREMELY important for the box to say in large print, and for the advertisement to say in large print, that a 24 hour first charge is required before use. I admit, I am not a genius when it comes to inflatable beds, but then, why should I be, when that is what I am paying you for?