Hi, Does anyone know if: 1) Apple Stores stock 11" MBA 128 GB but with 8GB ram. I only want this upgrade so its not the "Ultimate" config. 2) If not can you order in-store and get it delivered in-store. I would order online but the Apple USA store won't allow a UK billing address even for store collection. I'm going to Florida on Saturday, so I hope there will be stock around and delivery dates of the custom orders do not get pushed back. Thanks!