Re: It'll never happen...
A friend of mine had the same name as his father (Canadians\North Americans, but hey).
He used to book hotels of one chain under his name but use his fathers loyalty card\express membership number in the booking (Upgrades etc) & providing photo ID etc on arrival.
This was all very fine & not very confusing, until he got a phone call in his room while staying in one hotel to verify his identity & asking why he (or rather Dad) was trying to check into another hotel, while he was at another as the system wasn't accepting his Dad's check in with the loyalty number.
He had to pay for his own membership after that.