What does Manwë do all day and all the night?

Like does he really just sit in his throne and wait for Judgement Day or Dagor Dagorath? Why don't we know more about The Valar in the Third Age? Also what do the Valar talk about in Valimar.

I know Tolkien never gave us Third Age detail of the Valar aside from sending in the Maiar aka " Istari" , I'd like people's opinions of these questions.

Nice thorough answers appreciated.