[Wazza]

I've copped a couple of fairly decent downpours in mine...and the interior was fine.
A chamois over everything, andit helps clean up any dust you might have gathered as well.
That Alcantara ( Suede stuff) is the same as they use in Ferarris etc. and is extremely durable.

Any stains/spills...a clean cloth with metholated spirits on it , lifts every mark, and keeps it as good as new.

My interior guy told me that "Dry cleaners" use this method...just Metholated spirits on a clean cloth to get all stains and marks off this stuff.