The Schiphol Sheraton in AMS let me check in about 8:00 am once. My connection to MUC was cancelled due to snow there, so I didn't see much point in hanging around the airport all day hoping they cleared it up. I had NW rebook me on the next morning's flight since I had an extra day before meetings anyway. I called SPG from the KL lounge for a reservation, and they gave me the direct number of the hotel, which told me they had rooms ready and come on over. I didn't want to exit the secure area unless I knew the room was ready since I at least had lounge access. I was taking a nap while most of the others were still standing in line to rebook.