Hi Patrick,
Right now GP is translated into French, Russian, Spanish and German.
The theme is 100% translatable, so you can go in and translate it if you’d like: http://premium.wpmudev.org/blog/how-to-translate-a-wordpress-theme/
Making it RTL would require some CSS – mainly for the body content. The header and navigation can be aligned right in the Customizer, so I could provide the CSS for the rest of the site if you’d like.
In order to be able to toggle between languages with icons or links, you would need to use a translation plugin, for example: https://wordpress.org/plugins/google-language-translator/
Hope this helps 🙂