I just started using my new rMBP and I got the 15inch 8gb ram base model, and already its down to 4.4gb ram free and i havent installed anything yet or running any thing that would take up that much memory. I just want to make sure I wont run into issues soon. Later on I will probably use photo and video editing software. So not sure if I should return this to the apple store and upgrade the ram to avoid future headaches? Is that possible? Would you recommend it? Does apple give you problems for trying to do this in the first 2 week period?