sounds like you're talking about cloud saves. Yes there is a 24 hour wait between upload and download with that. If the save isn't copy protected you can just use a USB and upload and download as often as you like with no wait. Use triangle on the save data to see if it's copy protected.
The 24-hour wait time only applies to copy-prohibited save data; meaning saves that you can't copy to a USB flash drive (a small percentage of all save data). Saves that are not copy-prohibited can be downloaded from Playstation Plus online storage whenever you want. You could also use a FAT32-formatted flash drive to copy save data that isn't copy-prohibited; if you are not a Plus subscriber, or not all of your PS3s are connected to the Internet all of the time.
Very good! Thank you for taking the time to answer!
Yes, I was asking about cloud saves. I purchsed the Plus service and am very pleased as it's allowed me to do what I was wanting to do.