Not to be rude, but how did you manage to assume Chewie was CGI?
Have we really gotten so used to digital imagery in these last two decades that we’re starting to assume that everything had to be fake.
Will however admit that the new Chewie was much blonder than before. Maybe that’s just how Woolverstone age. He is after all well over 200 at this point.

I’m also curious to see what his roles in the future films will be now that Han is dead. Didn’t he stick with Han because of some debt, or is that just the EU explanation? Since he went with Rey to find Luke at the end it could be that he’ll be her copilot/sidekick in the next two films.
(I’m also assuming that he’ll play a big part in the upcoming young Han Solo film.)