Ooh thank you. I was not aware about single use points. I thought I'd done my research but there are always things to be missed! That's interesting and sheds a different light on things, that would allow for a little flexibility.
I heard about the Murphy beds, I've never slept on one though (they're not really a thing in the UK) so I'd prefer to plan for a proper bed in a secondary room. If I like the Murphy bed, that would be a happy surprise and would let me be flexible with 1BR vs 2BR. Do you know if Disney are replacing all sofa beds with them?