Misc. Questions

[Gothmog]

To answer your question about mortals dying or not in the Undying lands I provide this quote:

As for Frodo or other mortals, they could only dwell in Aman for a limited time - whether brief or long. The Valar had neither the power nor the right to confer 'immortality' upon them. Their sojourn was a 'purgatory', but one of peace and healing and they would eventually pass away (die at their own desire and of free will) to destinations of which the Elves knew nothing.- The Letters of J.R.R. Tolkien, 325

There's already a few threads concerning this, this one for example.

And Gimli probably was the only dwarf to go to the undying lands, even if it's hard to prove it. I don't think it says so literally, but I've never come across any record of some other dwarf doing the journey. It would be a quite famous dwarf if that would be the case and we should have heard of it.

Hope that's enough information!