Most of the time, when you use the facilities at a hotel for a business meeting, they may have a projection system, but generally they will not have a computer attached. In general, the one giving the presentation will bring a laptop to connect to the projection system.
Generally, there will be no removable disks (floppy or zip) involved at all.
When I first heard it, I knew that a disc just didn't sprout legs and walk out of the WH! I didn't think that a projector would store the data, but I didn't know for sure.