[Ellie May]

I actually think this is something that the surgeon should decide unless they have no preference. Reason being, they have to make sure that the anesthetic episode goes safety and increased time under anesethesia can be a concern.

I like the idea of doing both knees at once for the reasons you gave (mostly one recovery) but I would ask the surgeon to decide... They have seen this so many times and should know what works for them by now.