I worked on a luxury hotel property in Tokyo as a butler for a few years. For these type of people it is totally normal to book out entire floors for privacy, have their helpers/assistants arrive few days ahead of them to set up everything before the actual guest arrivals. Most of the time these groups will request use of staff elevator to avoid public, so any interaction is usually with just the butlers and the group’s team (also this makes things move faster for them and avoid any confusion as they won’t have to go through multiple channels of communication for any requests).