I have had issue when checking in to the hotel. They could not find my reservation because it dropped off the same day. Then I had to go through alot of trouble calling the SPG Platinum concierge to have them sort out the problems. It's extremely annoying. Fortunately these hotel incidents were only in US. I can't imagine being in another country and not having ease of mobile phone. Usually the receptionist are not very friendly. They won't call on behalf for you.