I think that Neris' loyalty to Mike is unshakeable - as i stated in one of my previous posts. How do you thank someone that got you out of jail for a possible life / death sentence for murder. If Mike had brought Rocco or especially Neri with him to Cuba the red flags would have been thrown up all over the place. By bringing the old guy, it shows a softened approach, that trip was more business than personal that no was going to get whacked.

I believe i saw in another post that the toy car being left out in the snow was Anthony being mad at mike, something to that effect.