Those shots "purporting" to show Titanic together with her older sister Olympic are great...amazing what you can do with photoshop these days.
Oh, I think they're genuine enough. Together For The Last Time
Of course, this is what led to that conspiracy theory of yours. If they were swapped this is when it would have been done. How can you tell which is which from those photos? There might be subtle differences but they look identical to a landlubber like me. It would obviously be far more complicated but it's basically a name change.
2,Many of her internal fittings can be found at the White Swan Hotel,Alnwick Northumberland UK Here
That's very interesting but if you check out your link those internal fittings are all part of a unique "Titanic Experience". Nobody is really interested in Olympic & they were almost identical right down to the internal fittings.
http://www.classiclodges.co.uk/whiteswanoffers/titanic.html