Personally I couldn't give a toss whether Andy is on RLA or Court 22 and I'm not sure he does either.
He's capable of getting the job done, no matter the court. I bet he does not even think about smalls details like what court he is on at all.
I think he must Proddy. For one thing he likes big crowds, especially if they can fire him up, although he says he's going to have to get used to them again. Also there must be a very slight difference in the surfaces - not that any of us would notice it, but these guys are extremely sensitive when it comes to that. Presumably this is why Andy likes to practise on all the show-courts in the AO and USO.
I understand though that Nadal has been complaining about the courts in general because he thinks they're too fast.