A silly question but here goes. Do you think it would cause any problem if I were checked in to more than one Hilton at a time? Say I had booked a weeklong stay, but had to suddenly go to another city midweek for work and check into another Hilton for a night. I guess this sort of scenario must crop up occasionally for experienced business travellers. I presume there are no restrictions Hilton actually have against doing this, but would/could it mess up the Hilton centralised backend systems with me technically being checked in at more than one Hilton at a time? I am not wholly confident about their IT systems, given the regular and lengthy weekend "maintenance" on their website...